diff --git a/.github/workflows/validatemanifest.py b/.github/workflows/validatemanifest.py
index 2e1fd901a..cb2978e46 100644
--- a/.github/workflows/validatemanifest.py
+++ b/.github/workflows/validatemanifest.py
@@ -18,8 +18,9 @@
 Validate that we aren't trying to include files that don't exist.
 """
 
-from glob import glob
 import os
+from glob import glob
+
 import toml
 
 # CONSTANTS
diff --git a/armi/__init__.py b/armi/__init__.py
index 7a3eadc52..874ddf84f 100644
--- a/armi/__init__.py
+++ b/armi/__init__.py
@@ -51,8 +51,10 @@
 import subprocess
 import sys
 import traceback
-from typing import Optional, List, Type
 import warnings
+from typing import List, Optional, Type
+
+import __main__ as main
 
 # The _bootstrap module performs operations that may need to occur before it is
 # necessarily safe to import the rest of the ARMI system. Things like:
@@ -60,35 +62,26 @@
 # - detect the nature of interaction with the user (terminal UI, GUI, unsupervized, etc)
 # - Initialize the nuclide database
 import armi._bootstrap
-from armi import context
+from armi import apps, cli, context, pluginManager, plugins, runLog
 from armi.context import (
-    ROOT,
-    RES,
-    DOC,
-    USER,
-    START_TIME,
+    APP_DATA,
     CURRENT_MODE,
+    DOC,
     MPI_COMM,
-    MPI_RANK,
+    MPI_DISTRIBUTABLE,
     MPI_NODENAME,
     MPI_NODENAMES,
-    MPI_DISTRIBUTABLE,
+    MPI_RANK,
     MPI_SIZE,
-    APP_DATA,
+    RES,
+    ROOT,
+    START_TIME,
+    USER,
+    Mode,
 )
-from armi.context import Mode
-
-from armi import cli
 from armi.meta import __version__
-from armi import apps
-from armi import pluginManager
-from armi import plugins
-from armi import runLog
-from armi.reactor import flags
-from armi.reactor import parameters
 from armi.nucDirectory import nuclideBases
-
-import __main__ as main
+from armi.reactor import flags, parameters
 
 # ARMI does not configure its own application by default. This is mostly to catch issues
 # involving calling code that requires the framework to be configured before that has
@@ -151,8 +144,7 @@ def init(choice=None, fName=None, cs=None, skipInspection=False):
     --------
     >>> o = armi.init()
     """
-    from armi import cases
-    from armi import settings
+    from armi import cases, settings
 
     if cs is None:
         if fName is None:
@@ -178,12 +170,8 @@ def getDefaultPlugins() -> List[Type[plugins.ArmiPlugin]]:
     This is useful for an application to fold all of the ARMI Framework's capabilities
     into its own set of plugins.
     """
-    from armi import cli
-    from armi import bookkeeping
-    from armi.physics import fuelCycle
-    from armi.physics import neutronics
-    from armi.physics import safety
-    from armi import reactor
+    from armi import bookkeeping, cli, reactor
+    from armi.physics import fuelCycle, neutronics, safety
 
     defaultPlugins = [
         cli.EntryPointsPlugin,
diff --git a/armi/__main__.py b/armi/__main__.py
index 3389d548e..0a9c379f1 100644
--- a/armi/__main__.py
+++ b/armi/__main__.py
@@ -20,9 +20,7 @@
 """
 import sys
 
-from armi import apps
-from armi import configure, isConfigured
-from armi import context
+from armi import apps, configure, context, isConfigured
 from armi.cli import ArmiCLI
 
 
diff --git a/armi/apps.py b/armi/apps.py
index 22b620239..7d6263868 100644
--- a/armi/apps.py
+++ b/armi/apps.py
@@ -29,16 +29,15 @@
 code to access such things through an App object.
 """
 # ruff: noqa: E402
-from typing import Dict, Optional, Tuple, List
 import collections
 import importlib
 import sys
+from typing import Dict, List, Optional, Tuple
 
-from armi import context, plugins, pluginManager, meta, settings
+from armi import context, meta, pluginManager, plugins, settings
 from armi.reactor import parameters
 from armi.reactor.flags import Flags
-from armi.settings import fwSettings
-from armi.settings import Setting
+from armi.settings import Setting, fwSettings
 
 
 class App:
@@ -85,14 +84,14 @@ def __init__(self):
         self.__initNewPlugins()
 
     def __initNewPlugins(self):
-        from armi import cli
-        from armi import bookkeeping
-        from armi.physics import fuelCycle
-        from armi.physics import fuelPerformance
-        from armi.physics import neutronics
-        from armi.physics import safety
-        from armi.physics import thermalHydraulics
-        from armi import reactor
+        from armi import bookkeeping, cli, reactor
+        from armi.physics import (
+            fuelCycle,
+            fuelPerformance,
+            neutronics,
+            safety,
+            thermalHydraulics,
+        )
 
         self._pm = plugins.getNewPluginManager()
         for plugin in (
diff --git a/armi/bookkeeping/__init__.py b/armi/bookkeeping/__init__.py
index 00c8f149d..4a1b0bf7d 100644
--- a/armi/bookkeeping/__init__.py
+++ b/armi/bookkeeping/__init__.py
@@ -20,11 +20,13 @@ class BookkeepingPlugin(plugins.ArmiPlugin):
     @staticmethod
     @plugins.HOOKIMPL
     def exposeInterfaces(cs):
+        from armi.bookkeeping import (
+            historyTracker,
+            mainInterface,
+            memoryProfiler,
+            snapshotInterface,
+        )
         from armi.bookkeeping.db import databaseInterface
-        from armi.bookkeeping import historyTracker
-        from armi.bookkeeping import memoryProfiler
-        from armi.bookkeeping import mainInterface
-        from armi.bookkeeping import snapshotInterface
         from armi.bookkeeping.report import reportInterface
 
         interfaceInfo = []
@@ -75,8 +77,8 @@ def mpiActionRequiresReset(cmd) -> bool:
         --------
         armi.operators.operatorMPI.OperatorMPI.workerOperate
         """
-        from armi.bookkeeping import memoryProfiler
         from armi import mpiActions
+        from armi.bookkeeping import memoryProfiler
 
         if isinstance(cmd, mpiActions.MpiAction):
             for donotReset in (
diff --git a/armi/bookkeeping/db/__init__.py b/armi/bookkeeping/db/__init__.py
index efc5f734a..5e2b9f421 100644
--- a/armi/bookkeeping/db/__init__.py
+++ b/armi/bookkeeping/db/__init__.py
@@ -62,15 +62,14 @@
 import os
 
 from armi import runLog
+from armi.bookkeeping.db.compareDB3 import compareDatabases
 
 # re-export package components for easier import
 from armi.bookkeeping.db.database import Database
 from armi.bookkeeping.db.database3 import Database3
 from armi.bookkeeping.db.databaseInterface import DatabaseInterface
-from armi.bookkeeping.db.compareDB3 import compareDatabases
 from armi.bookkeeping.db.factory import databaseFactory
 
-
 __all__ = [
     "Database",
     "Database3",
diff --git a/armi/bookkeeping/db/compareDB3.py b/armi/bookkeeping/db/compareDB3.py
index e71e4167e..ec64cab72 100644
--- a/armi/bookkeeping/db/compareDB3.py
+++ b/armi/bookkeeping/db/compareDB3.py
@@ -43,11 +43,11 @@
   even if the code hasn't changed.
 
 """
-from typing import Sequence, Optional, Pattern, Tuple
 import collections
 import os
 import re
 import traceback
+from typing import Optional, Pattern, Sequence, Tuple
 
 import h5py
 import numpy as np
diff --git a/armi/bookkeeping/db/databaseInterface.py b/armi/bookkeeping/db/databaseInterface.py
index 5e1e73ce9..fd5ebbd2b 100644
--- a/armi/bookkeeping/db/databaseInterface.py
+++ b/armi/bookkeeping/db/databaseInterface.py
@@ -21,25 +21,22 @@
 import pathlib
 import time
 from typing import (
+    MutableSequence,
     Optional,
-    Tuple,
     Sequence,
-    MutableSequence,
+    Tuple,
 )
 
-from armi import context
-from armi import interfaces
-from armi import runLog
+from armi import context, interfaces, runLog
 from armi.bookkeeping.db.database import Database, getH5GroupName
-from armi.reactor.parameters import parameterDefinitions
+from armi.bookkeeping.db.typedefs import Histories, History
 from armi.reactor.composites import ArmiObject
-from armi.bookkeeping.db.typedefs import History, Histories
-from armi.utils import getPreviousTimeNode, getStepLengths
+from armi.reactor.parameters import parameterDefinitions
 from armi.settings.fwSettings.databaseSettings import (
-    CONF_SYNC_AFTER_WRITE,
     CONF_FORCE_DB_PARAMS,
+    CONF_SYNC_AFTER_WRITE,
 )
-
+from armi.utils import getPreviousTimeNode, getStepLengths
 
 ORDER = interfaces.STACK_ORDER.BOOKKEEPING
 
diff --git a/armi/bookkeeping/db/factory.py b/armi/bookkeeping/db/factory.py
index 386e327a7..50cc51346 100644
--- a/armi/bookkeeping/db/factory.py
+++ b/armi/bookkeeping/db/factory.py
@@ -17,8 +17,8 @@
 
 import h5py
 
-from armi.bookkeeping.db.database import Database
 from armi.bookkeeping.db import permissions
+from armi.bookkeeping.db.database import Database
 
 
 def databaseFactory(dbName: str, permission: str, version: Optional[str] = None):
diff --git a/armi/bookkeeping/db/layout.py b/armi/bookkeeping/db/layout.py
index e36cd0630..ff0671729 100644
--- a/armi/bookkeeping/db/layout.py
+++ b/armi/bookkeeping/db/layout.py
@@ -26,12 +26,12 @@
 
 import collections
 from typing import (
+    Any,
+    Dict,
+    List,
     Optional,
     Tuple,
     Type,
-    Dict,
-    Any,
-    List,
 )
 
 import numpy as np
@@ -41,8 +41,7 @@
 from armi.reactor.components import Component
 from armi.reactor.composites import ArmiObject
 from armi.reactor.excoreStructure import ExcoreStructure
-from armi.reactor.reactors import Core
-from armi.reactor.reactors import Reactor
+from armi.reactor.reactors import Core, Reactor
 
 # Here we store the Database version information.
 DB_MAJOR = 3
diff --git a/armi/bookkeeping/db/tests/test_comparedb3.py b/armi/bookkeeping/db/tests/test_comparedb3.py
index 4eb5531d8..4bcb18fe2 100644
--- a/armi/bookkeeping/db/tests/test_comparedb3.py
+++ b/armi/bookkeeping/db/tests/test_comparedb3.py
@@ -19,17 +19,17 @@
 import numpy as np
 
 from armi.bookkeeping.db.compareDB3 import (
-    _compareSets,
+    DiffResults,
+    OutputWriter,
     _compareAuxData,
+    _compareSets,
     _diffSimpleData,
     _diffSpecialData,
     compareDatabases,
-    DiffResults,
-    OutputWriter,
 )
 from armi.bookkeeping.db.databaseInterface import DatabaseInterface
 from armi.reactor.tests import test_reactors
-from armi.tests import mockRunLogs, TEST_ROOT
+from armi.tests import TEST_ROOT, mockRunLogs
 from armi.utils.directoryChangers import TemporaryDirectoryChanger
 
 
diff --git a/armi/bookkeeping/db/tests/test_databaseInterface.py b/armi/bookkeeping/db/tests/test_databaseInterface.py
index b65239237..a4c12ded4 100644
--- a/armi/bookkeeping/db/tests/test_databaseInterface.py
+++ b/armi/bookkeeping/db/tests/test_databaseInterface.py
@@ -21,9 +21,7 @@
 from numpy.testing import assert_allclose, assert_equal
 
 from armi import __version__ as version
-from armi import interfaces
-from armi import runLog
-from armi import settings
+from armi import interfaces, runLog, settings
 from armi.bookkeeping.db.database import Database
 from armi.bookkeeping.db.databaseInterface import DatabaseInterface
 from armi.cases import case
diff --git a/armi/bookkeeping/db/tests/test_layout.py b/armi/bookkeeping/db/tests/test_layout.py
index 3769351d0..5acf5e4ed 100644
--- a/armi/bookkeeping/db/tests/test_layout.py
+++ b/armi/bookkeeping/db/tests/test_layout.py
@@ -16,8 +16,7 @@
 import unittest
 
 from armi import context
-from armi.bookkeeping.db import database
-from armi.bookkeeping.db import layout
+from armi.bookkeeping.db import database, layout
 from armi.reactor import grids
 from armi.utils.directoryChangers import TemporaryDirectoryChanger
 
diff --git a/armi/bookkeeping/db/typedefs.py b/armi/bookkeeping/db/typedefs.py
index a8cf505cd..e1ffd8990 100644
--- a/armi/bookkeeping/db/typedefs.py
+++ b/armi/bookkeeping/db/typedefs.py
@@ -12,12 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from typing import Dict, Tuple, Any
+from typing import Any, Dict, Tuple
 
 from armi.reactor.composites import ArmiObject
 from armi.reactor.grids import LocationBase
 
-
 # Return type for the getHistories() method
 #              param       time node      value
 History = Dict[str, Dict[Tuple[int, int], Any]]
diff --git a/armi/bookkeeping/historyTracker.py b/armi/bookkeeping/historyTracker.py
index 4f5a6e752..0bf34e347 100644
--- a/armi/bookkeeping/historyTracker.py
+++ b/armi/bookkeeping/historyTracker.py
@@ -67,21 +67,19 @@ def getHistoryParams(self):
 See :ref:`detail-assems`.
 
 """
-from typing import TYPE_CHECKING
 import traceback
+from typing import TYPE_CHECKING
 
-from armi import interfaces
-from armi import runLog
-from armi import operators
-from armi.reactor.flags import Flags
+from armi import interfaces, operators, runLog
 from armi.reactor import grids
+from armi.reactor.flags import Flags
 from armi.utils import tabulate
 
 ORDER = 2 * interfaces.STACK_ORDER.BEFORE + interfaces.STACK_ORDER.BOOKKEEPING
 
 if TYPE_CHECKING:
-    from armi.reactor.blocks import Block
     from armi.reactor.assemblies import Assembly
+    from armi.reactor.blocks import Block
 
 
 def describeInterfaces(cs):
diff --git a/armi/bookkeeping/mainInterface.py b/armi/bookkeeping/mainInterface.py
index 3689ec038..67b26e886 100644
--- a/armi/bookkeeping/mainInterface.py
+++ b/armi/bookkeeping/mainInterface.py
@@ -22,18 +22,15 @@
 import os
 import re
 
-from armi import context
-from armi import interfaces
-from armi import operators
-from armi import runLog
-from armi import utils
+from armi import context, interfaces, operators, runLog, utils
 from armi.bookkeeping.db.database import Database
-from armi.settings.fwSettings.globalSettings import CONF_COPY_FILES_FROM
-from armi.settings.fwSettings.globalSettings import CONF_COPY_FILES_TO
+from armi.settings.fwSettings.globalSettings import (
+    CONF_COPY_FILES_FROM,
+    CONF_COPY_FILES_TO,
+)
 from armi.utils import pathTools
 from armi.utils.customExceptions import InputError
 
-
 ORDER = interfaces.STACK_ORDER.PREPROCESSING
 
 
diff --git a/armi/bookkeeping/memoryProfiler.py b/armi/bookkeeping/memoryProfiler.py
index f3b6106d4..302f2d462 100644
--- a/armi/bookkeeping/memoryProfiler.py
+++ b/armi/bookkeeping/memoryProfiler.py
@@ -36,15 +36,12 @@
 https://pythonhosted.org/psutil/
 https://docs.python.org/3/library/gc.html#gc.garbage
 """
-from os import cpu_count
-from typing import Optional
 import gc
 import sys
+from os import cpu_count
+from typing import Optional
 
-from armi import context
-from armi import interfaces
-from armi import mpiActions
-from armi import runLog
+from armi import context, interfaces, mpiActions, runLog
 from armi.reactor.composites import ArmiObject
 from armi.utils import tabulate
 from armi.utils.customExceptions import NonexistentSetting
diff --git a/armi/bookkeeping/report/newReportUtils.py b/armi/bookkeeping/report/newReportUtils.py
index 98c14bf92..e7f2adb45 100644
--- a/armi/bookkeeping/report/newReportUtils.py
+++ b/armi/bookkeeping/report/newReportUtils.py
@@ -13,6 +13,7 @@
 # limitations under the License.
 import collections
 import os
+
 import numpy as np
 
 from armi import runLog
@@ -22,12 +23,12 @@
 from armi.reactor.components import component
 from armi.reactor.flags import Flags
 from armi.utils import (
-    units,
-    plotting,
-    iterables,
     getAvailabilityFactors,
     getCycleLengths,
     getStepLengths,
+    iterables,
+    plotting,
+    units,
 )
 
 
@@ -294,8 +295,7 @@ def _setGeneralCoreParametersData(core, cs, coreDesignTable):
 
 
 def _setGeneralSimulationData(core, cs, coreDesignTable):
-    from armi.physics.neutronics.settings import CONF_GEN_XS
-    from armi.physics.neutronics.settings import CONF_GLOBAL_FLUX_ACTIVE
+    from armi.physics.neutronics.settings import CONF_GEN_XS, CONF_GLOBAL_FLUX_ACTIVE
 
     coreDesignTable.addRow(["  ", ""])
     coreDesignTable.addRow(["Full Core Model", "{}".format(core.isFullCore)])
@@ -411,8 +411,7 @@ def insertSettingsData(cs, report):
     report: ReportContent
         The report to be added to
     """
-    from armi.physics.neutronics.settings import CONF_GEN_XS
-    from armi.physics.neutronics.settings import CONF_NEUTRONICS_KERNEL
+    from armi.physics.neutronics.settings import CONF_GEN_XS, CONF_NEUTRONICS_KERNEL
 
     report[COMPREHENSIVE_REPORT][CASE_PARAMETERS] = newReports.Table("Case Parameters")
     report[COMPREHENSIVE_REPORT][REACTOR_PARAMS] = newReports.Table(
diff --git a/armi/bookkeeping/report/reportInterface.py b/armi/bookkeeping/report/reportInterface.py
index 0105f70bb..46940fb12 100644
--- a/armi/bookkeeping/report/reportInterface.py
+++ b/armi/bookkeeping/report/reportInterface.py
@@ -20,16 +20,13 @@
 """
 import re
 
-from armi import interfaces
-from armi import runLog
+from armi import interfaces, runLog
 from armi.bookkeeping import report
 from armi.bookkeeping.report import reportingUtils
 from armi.physics import neutronics
 from armi.physics.neutronics.settings import CONF_NEUTRONICS_TYPE
 from armi.reactor.flags import Flags
-from armi.utils import directoryChangers
-from armi.utils import reportPlotting
-from armi.utils import units
+from armi.utils import directoryChangers, reportPlotting, units
 
 ORDER = interfaces.STACK_ORDER.BEFORE + interfaces.STACK_ORDER.BOOKKEEPING
 
diff --git a/armi/bookkeeping/report/reportingUtils.py b/armi/bookkeeping/report/reportingUtils.py
index 9ac13287c..1378efdf7 100644
--- a/armi/bookkeeping/report/reportingUtils.py
+++ b/armi/bookkeeping/report/reportingUtils.py
@@ -16,7 +16,6 @@
 A collection of miscellaneous functions used by ReportInterface to generate
 various reports.
 """
-from copy import copy
 import collections
 import os
 import pathlib
@@ -25,23 +24,23 @@
 import sys
 import textwrap
 import time
+from copy import copy
 
 import numpy as np
 
-from armi import context
-from armi import interfaces
-from armi import runLog
+from armi import context, interfaces, runLog
 from armi.bookkeeping import report
 from armi.operators import RunTypes
 from armi.reactor.components import ComponentType
 from armi.reactor.flags import Flags
-from armi.utils import getFileSHA1Hash
-from armi.utils import iterables
-from armi.utils import plotting
-from armi.utils import tabulate
-from armi.utils import textProcessors
-from armi.utils import units
-
+from armi.utils import (
+    getFileSHA1Hash,
+    iterables,
+    plotting,
+    tabulate,
+    textProcessors,
+    units,
+)
 
 # Set to prevent the image and text from being too small to read.
 MAX_ASSEMS_PER_ASSEM_PLOT = 6
@@ -970,8 +969,7 @@ def _setGeneralCoreParametersData(core, cs, coreDesignTable):
 
 
 def _setGeneralSimulationData(core, cs, coreDesignTable):
-    from armi.physics.neutronics.settings import CONF_GEN_XS
-    from armi.physics.neutronics.settings import CONF_GLOBAL_FLUX_ACTIVE
+    from armi.physics.neutronics.settings import CONF_GEN_XS, CONF_GLOBAL_FLUX_ACTIVE
 
     report.setData("  ", "", coreDesignTable, report.DESIGN)
     report.setData(
diff --git a/armi/bookkeeping/report/tests/test_newReport.py b/armi/bookkeeping/report/tests/test_newReport.py
index bf11ecf2c..3337cc351 100644
--- a/armi/bookkeeping/report/tests/test_newReport.py
+++ b/armi/bookkeeping/report/tests/test_newReport.py
@@ -20,12 +20,10 @@
 import htmltree
 
 from armi import getPluginManagerOrFail
-from armi.bookkeeping.report import data
-from armi.bookkeeping.report import newReports
+from armi.bookkeeping.report import data, newReports
 from armi.physics.neutronics.reports import neutronicsPlotting
 from armi.reactor.tests import test_reactors
-from armi.tests import mockRunLogs
-from armi.tests import TEST_ROOT
+from armi.tests import TEST_ROOT, mockRunLogs
 from armi.utils.directoryChangers import TemporaryDirectoryChanger
 
 
diff --git a/armi/bookkeeping/report/tests/test_report.py b/armi/bookkeeping/report/tests/test_report.py
index 7499cd8a8..b395781d6 100644
--- a/armi/bookkeeping/report/tests/test_report.py
+++ b/armi/bookkeeping/report/tests/test_report.py
@@ -13,13 +13,13 @@
 # limitations under the License.
 
 """Really basic tests of the report Utils."""
-from glob import glob
-from unittest.mock import patch
 import logging
 import os
 import subprocess
 import sys
 import unittest
+from glob import glob
+from unittest.mock import patch
 
 from armi import runLog, settings
 from armi.bookkeeping import report
diff --git a/armi/bookkeeping/snapshotInterface.py b/armi/bookkeeping/snapshotInterface.py
index 087c0a6b9..1ef75c8a8 100644
--- a/armi/bookkeeping/snapshotInterface.py
+++ b/armi/bookkeeping/snapshotInterface.py
@@ -27,12 +27,9 @@
 
 Snapshots can be requested through the settings: ``dumpSnapshot`` and/or ``defaultSnapshots``.
 """
-from armi import interfaces
-from armi import operators
-from armi import runLog
+from armi import interfaces, operators, runLog
 from armi.utils import getStepLengths
 
-
 ORDER = interfaces.STACK_ORDER.POSTPROCESSING
 
 
diff --git a/armi/bookkeeping/tests/_constants.py b/armi/bookkeeping/tests/_constants.py
index 8002d27ec..28f28041e 100644
--- a/armi/bookkeeping/tests/_constants.py
+++ b/armi/bookkeeping/tests/_constants.py
@@ -22,7 +22,6 @@
 
 from armi.tests import TEST_ROOT
 
-
 # These files are needed to run the data_model ipython notebook, which is done in
 # test_historyTracker, and when building the docs.
 TUTORIAL_FILES = [
diff --git a/armi/bookkeeping/tests/test_historyTracker.py b/armi/bookkeeping/tests/test_historyTracker.py
index e27a92395..a9d5afdc6 100644
--- a/armi/bookkeeping/tests/test_historyTracker.py
+++ b/armi/bookkeeping/tests/test_historyTracker.py
@@ -24,14 +24,12 @@
 import shutil
 import unittest
 
-from armi import settings
-from armi import utils
+from armi import settings, utils
 from armi.bookkeeping import historyTracker
 from armi.bookkeeping.tests._constants import TUTORIAL_FILES
 from armi.cases import case
 from armi.context import ROOT
-from armi.reactor import blocks
-from armi.reactor import grids
+from armi.reactor import blocks, grids
 from armi.reactor.flags import Flags
 from armi.tests import ArmiTestHelper
 from armi.utils.directoryChangers import TemporaryDirectoryChanger
diff --git a/armi/bookkeeping/tests/test_memoryProfiler.py b/armi/bookkeeping/tests/test_memoryProfiler.py
index 497fb3a64..d32adf185 100644
--- a/armi/bookkeeping/tests/test_memoryProfiler.py
+++ b/armi/bookkeeping/tests/test_memoryProfiler.py
@@ -13,9 +13,9 @@
 # limitations under the License.
 
 """Tests for memoryProfiler."""
-from unittest.mock import MagicMock, patch
 import logging
 import unittest
+from unittest.mock import MagicMock, patch
 
 from armi import runLog
 from armi.bookkeeping import memoryProfiler
@@ -24,7 +24,7 @@
     getTotalJobMemory,
 )
 from armi.reactor.tests import test_reactors
-from armi.tests import mockRunLogs, TEST_ROOT
+from armi.tests import TEST_ROOT, mockRunLogs
 
 
 class TestMemoryProfiler(unittest.TestCase):
diff --git a/armi/bookkeeping/visualization/entryPoint.py b/armi/bookkeeping/visualization/entryPoint.py
index 13d919951..7a677721e 100644
--- a/armi/bookkeeping/visualization/entryPoint.py
+++ b/armi/bookkeeping/visualization/entryPoint.py
@@ -127,9 +127,8 @@ def parse(self, args):
 
     def invoke(self):
         # late imports so that we dont have to import the world to do anything
-        from armi.bookkeeping.visualization import vtk
-        from armi.bookkeeping.visualization import xdmf
         from armi.bookkeeping.db import databaseFactory
+        from armi.bookkeeping.visualization import vtk, xdmf
 
         # a little baroque, but easy to extend with future formats
         formatMap = {
diff --git a/armi/bookkeeping/visualization/tests/test_vis.py b/armi/bookkeeping/visualization/tests/test_vis.py
index c53dae864..050357280 100644
--- a/armi/bookkeeping/visualization/tests/test_vis.py
+++ b/armi/bookkeeping/visualization/tests/test_vis.py
@@ -20,11 +20,8 @@
 
 from armi import settings
 from armi.bookkeeping.db import Database
-from armi.bookkeeping.visualization import utils
-from armi.bookkeeping.visualization import vtk
-from armi.bookkeeping.visualization import xdmf
-from armi.reactor import blocks
-from armi.reactor import components
+from armi.bookkeeping.visualization import utils, vtk, xdmf
+from armi.reactor import blocks, components
 from armi.reactor.tests import test_reactors
 from armi.utils.directoryChangers import TemporaryDirectoryChanger
 
diff --git a/armi/bookkeeping/visualization/utils.py b/armi/bookkeeping/visualization/utils.py
index c692afeeb..eabafd020 100644
--- a/armi/bookkeeping/visualization/utils.py
+++ b/armi/bookkeeping/visualization/utils.py
@@ -26,12 +26,9 @@
 from pyevtk.hl import unstructuredGridToVTK
 from pyevtk.vtk import VtkHexahedron, VtkQuadraticHexahedron
 
-from armi.reactor import assemblies
-from armi.reactor import reactors
-from armi.reactor import blocks
+from armi.reactor import assemblies, blocks, reactors
 from armi.utils import hexagon
 
-
 # The hex prism cell type is not very well-documented, and so is not described in
 # pyevtk. Digging into the header reveals that `16` does the trick.
 _HEX_PRISM_TID = 16
diff --git a/armi/bookkeeping/visualization/vtk.py b/armi/bookkeeping/visualization/vtk.py
index f5b382f66..5a4a30013 100644
--- a/armi/bookkeeping/visualization/vtk.py
+++ b/armi/bookkeeping/visualization/vtk.py
@@ -28,20 +28,15 @@
   wouldn't be too difficult to do here either. Also future work, but probably not super
   important unless dealing with really big meshes.
 """
-from typing import Dict, Any, List, Optional, Set, Tuple
+from typing import Any, Dict, List, Optional, Set, Tuple
 
 import numpy as np
 from pyevtk.vtk import VtkGroup
 
 from armi import runLog
 from armi.bookkeeping.db import database
-from armi.bookkeeping.visualization import dumper
-from armi.bookkeeping.visualization import utils
-from armi.reactor import assemblies
-from armi.reactor import blocks
-from armi.reactor import composites
-from armi.reactor import parameters
-from armi.reactor import reactors
+from armi.bookkeeping.visualization import dumper, utils
+from armi.reactor import assemblies, blocks, composites, parameters, reactors
 
 
 class VtkDumper(dumper.VisFileDumper):
diff --git a/armi/bookkeeping/visualization/xdmf.py b/armi/bookkeeping/visualization/xdmf.py
index c912bba21..566816952 100644
--- a/armi/bookkeeping/visualization/xdmf.py
+++ b/armi/bookkeeping/visualization/xdmf.py
@@ -39,22 +39,17 @@
 import io
 import math
 import pathlib
-from typing import Optional, Set, List, Tuple, Dict
-import xml.etree.ElementTree as ET
 import xml.dom.minidom
+import xml.etree.ElementTree as ET
+from typing import Dict, List, Optional, Set, Tuple
 
-import numpy as np
 import h5py
+import numpy as np
 
 from armi import runLog
-from armi.reactor import assemblies
-from armi.reactor import composites
-from armi.reactor import reactors
-from armi.reactor import blocks
 from armi.bookkeeping.db import database
-from armi.bookkeeping.visualization import dumper
-from armi.bookkeeping.visualization import utils
-
+from armi.bookkeeping.visualization import dumper, utils
+from armi.reactor import assemblies, blocks, composites, reactors
 
 _VTK_TO_XDMF_CELLS = {16: 16}
 
diff --git a/armi/cases/case.py b/armi/cases/case.py
index 588b020c4..05eeb3ce1 100644
--- a/armi/cases/case.py
+++ b/armi/cases/case.py
@@ -24,7 +24,6 @@
 --------
 armi.cases.suite : A collection of Cases
 """
-from typing import Dict, Optional, Sequence, Set, Union
 import ast
 import cProfile
 import glob
@@ -37,28 +36,22 @@
 import textwrap
 import time
 import trace
+from typing import Dict, Optional, Sequence, Set, Union
 
 import coverage
 
-from armi import context
-from armi import getPluginManager
-from armi import interfaces
-from armi import operators
-from armi import runLog
-from armi import settings
+from armi import context, getPluginManager, interfaces, operators, runLog, settings
 from armi.bookkeeping.db import compareDatabases
 from armi.cli import reportsEntryPoint
 from armi.nucDirectory import nuclideBases
 from armi.physics.neutronics.settings import CONF_LOADING_FILE
-from armi.reactor import blueprints
-from armi.reactor import reactors
-from armi.reactor import systemLayoutInput
-from armi.utils import pathTools
-from armi.utils import tabulate
-from armi.utils import textProcessors
+from armi.reactor import blueprints, reactors, systemLayoutInput
+from armi.utils import pathTools, tabulate, textProcessors
 from armi.utils.customExceptions import NonexistentSetting
-from armi.utils.directoryChangers import DirectoryChanger
-from armi.utils.directoryChangers import ForcedCreationDirectoryChanger
+from armi.utils.directoryChangers import (
+    DirectoryChanger,
+    ForcedCreationDirectoryChanger,
+)
 
 # Change from default .coverage to help with Windows dotfile issues.
 # Must correspond with data_file entry in `pyproject.toml`!
diff --git a/armi/cases/inputModifiers/tests/test_inputModifiers.py b/armi/cases/inputModifiers/tests/test_inputModifiers.py
index d711275aa..cb03835a4 100644
--- a/armi/cases/inputModifiers/tests/test_inputModifiers.py
+++ b/armi/cases/inputModifiers/tests/test_inputModifiers.py
@@ -12,20 +12,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 """Unit tests for input modifiers."""
-from ruamel import yaml
 import io
 import os
 import unittest
 
-from armi import cases
-from armi import settings
+from ruamel import yaml
+
+from armi import cases, settings
 from armi.cases import suiteBuilder
-from armi.reactor import blueprints
-from armi.reactor import systemLayoutInput
-from armi.utils import directoryChangers
 from armi.cases.inputModifiers import (
-    neutronicsModifiers,
     inputModifiers,
+    neutronicsModifiers,
     pinTypeInputModifiers,
 )
 from armi.physics.neutronics.fissionProductModel.fissionProductModelSettings import (
@@ -36,7 +33,9 @@
     CONF_EPS_FSAVG,
     CONF_EPS_FSPOINT,
 )
+from armi.reactor import blueprints, systemLayoutInput
 from armi.reactor.tests import test_reactors
+from armi.utils import directoryChangers
 
 
 class MockGeom:
diff --git a/armi/cases/suite.py b/armi/cases/suite.py
index 222e2397c..6b580e9ec 100644
--- a/armi/cases/suite.py
+++ b/armi/cases/suite.py
@@ -28,14 +28,12 @@
 armi.cases.case : An individual item of a case suite.
 """
 import os
-from typing import Optional, Sequence
 import traceback
+from typing import Optional, Sequence
 
-from armi import runLog
-from armi import settings
+from armi import runLog, settings
 from armi.cases import case as armicase
-from armi.utils import directoryChangers
-from armi.utils import tabulate
+from armi.utils import directoryChangers, tabulate
 
 
 class CaseSuite:
diff --git a/armi/cases/suiteBuilder.py b/armi/cases/suiteBuilder.py
index fd846086d..47d475bd1 100644
--- a/armi/cases/suiteBuilder.py
+++ b/armi/cases/suiteBuilder.py
@@ -25,12 +25,13 @@
 of how you can modify inputs for parameter sweeping. Power-users will generally make
 their own ``Modifier``\ s that are design-specific.
 """
-from collections import Counter
-from pyDOE import lhs
-from typing import List
 import copy
 import os
 import random
+from collections import Counter
+from typing import List
+
+from pyDOE import lhs
 
 from armi.cases import suite
 
diff --git a/armi/cases/tests/test_cases.py b/armi/cases/tests/test_cases.py
index b04c9fcdd..9347e1616 100644
--- a/armi/cases/tests/test_cases.py
+++ b/armi/cases/tests/test_cases.py
@@ -22,24 +22,14 @@
 
 import h5py
 
-from armi import cases
-from armi import context
-from armi import getApp
-from armi import interfaces
-from armi import plugins
-from armi import runLog
-from armi import settings
+from armi import cases, context, getApp, interfaces, plugins, runLog, settings
 from armi.bookkeeping.db.databaseInterface import DatabaseInterface
 from armi.physics.fuelCycle.settings import CONF_SHUFFLE_LOGIC
-from armi.reactor import blueprints
-from armi.reactor import systemLayoutInput
+from armi.reactor import blueprints, systemLayoutInput
 from armi.reactor.tests import test_reactors
-from armi.tests import ARMI_RUN_PATH
-from armi.tests import mockRunLogs
-from armi.tests import TEST_ROOT
+from armi.tests import ARMI_RUN_PATH, TEST_ROOT, mockRunLogs
 from armi.utils import directoryChangers
 
-
 GEOM_INPUT = """<?xml version="1.0" ?>
 <reactor geom="hex" symmetry="third core periodic">
     <assembly name="A1" pos="1"  ring="1"/>
diff --git a/armi/cases/tests/test_suiteBuilder.py b/armi/cases/tests/test_suiteBuilder.py
index 81c94c639..eab1f618c 100644
--- a/armi/cases/tests/test_suiteBuilder.py
+++ b/armi/cases/tests/test_suiteBuilder.py
@@ -18,12 +18,12 @@
 
 from armi import cases, settings
 from armi.cases.inputModifiers.inputModifiers import (
-    SamplingInputModifier,
     InputModifier,
+    SamplingInputModifier,
 )
 from armi.cases.suiteBuilder import (
-    LatinHyperCubeSuiteBuilder,
     FullFactorialSuiteBuilder,
+    LatinHyperCubeSuiteBuilder,
     SeparateEffectsSuiteBuilder,
 )
 
diff --git a/armi/cli/__init__.py b/armi/cli/__init__.py
index dd46f65c2..2e496f413 100644
--- a/armi/cli/__init__.py
+++ b/armi/cli/__init__.py
@@ -45,10 +45,7 @@
 import textwrap
 from typing import Optional
 
-from armi import context
-from armi import meta
-from armi import plugins
-from armi import runLog
+from armi import context, meta, plugins, runLog
 
 
 class EntryPointsPlugin(plugins.ArmiPlugin):
@@ -57,16 +54,16 @@ class EntryPointsPlugin(plugins.ArmiPlugin):
     def defineEntryPoints():
         from armi.cli import (
             checkInputs,
+            # testing
+            cleanTemps,
             clone,
             compareCases,
+            gridGui,
             migrateInputs,
             modify,
+            reportsEntryPoint,
             run,
-            gridGui,
-            # testing
-            cleanTemps,
             runSuite,
-            reportsEntryPoint,
         )
 
         entryPoints = []
diff --git a/armi/cli/database.py b/armi/cli/database.py
index bf33e20ee..df55db474 100644
--- a/armi/cli/database.py
+++ b/armi/cli/database.py
@@ -16,8 +16,7 @@
 import os
 import pathlib
 
-from armi import context
-from armi import runLog
+from armi import context, runLog
 from armi.cli.entryPoint import EntryPoint
 from armi.utils.textProcessors import resolveMarkupInclusions
 
diff --git a/armi/cli/gridGui.py b/armi/cli/gridGui.py
index e99c82e6c..d02c5dd13 100644
--- a/armi/cli/gridGui.py
+++ b/armi/cli/gridGui.py
@@ -38,6 +38,7 @@ def invoke(self):
         # invoking the entry point
         try:
             import wx
+
             from armi.utils import gridEditor
         except ImportError:
             raise RuntimeError(
diff --git a/armi/cli/modify.py b/armi/cli/modify.py
index 197f9f8bf..e1ed6bdaf 100644
--- a/armi/cli/modify.py
+++ b/armi/cli/modify.py
@@ -17,9 +17,7 @@
 file(s). All valid settings may be used as keyword arguments.
 """
 
-from armi import operators
-from armi import runLog
-from armi import settings
+from armi import operators, runLog, settings
 from armi.cli.entryPoint import EntryPoint
 
 
diff --git a/armi/cli/reportsEntryPoint.py b/armi/cli/reportsEntryPoint.py
index efb2802fc..12ca7eb25 100644
--- a/armi/cli/reportsEntryPoint.py
+++ b/armi/cli/reportsEntryPoint.py
@@ -17,8 +17,7 @@
 from armi.bookkeeping.db import databaseFactory
 from armi.bookkeeping.report import newReports as reports
 from armi.cli import entryPoint
-from armi.reactor import blueprints
-from armi.reactor import reactors
+from armi.reactor import blueprints, reactors
 from armi.utils.directoryChangers import ForcedCreationDirectoryChanger
 
 
diff --git a/armi/cli/runSuite.py b/armi/cli/runSuite.py
index 6df7d1e84..7bd38201e 100644
--- a/armi/cli/runSuite.py
+++ b/armi/cli/runSuite.py
@@ -15,8 +15,8 @@
 """Run multiple ARMI cases one after the other on the local machine."""
 import os
 
-from armi.cli.run import RunEntryPoint
 from armi import cases
+from armi.cli.run import RunEntryPoint
 from armi.utils import directoryChangers
 
 
diff --git a/armi/cli/tests/test_runEntryPoint.py b/armi/cli/tests/test_runEntryPoint.py
index 088937d2e..2094f6222 100644
--- a/armi/cli/tests/test_runEntryPoint.py
+++ b/armi/cli/tests/test_runEntryPoint.py
@@ -12,12 +12,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 """Test for run cli entry point."""
-from glob import glob
-from shutil import copyfile
 import logging
 import os
 import sys
 import unittest
+from glob import glob
+from shutil import copyfile
 
 from armi import runLog
 from armi.__main__ import main
@@ -35,7 +35,7 @@
 from armi.cli.runSuite import RunSuiteCommand
 from armi.physics.neutronics.diffIsotxs import CompareIsotxsLibraries
 from armi.testing import loadTestReactor, reduceTestReactorRings
-from armi.tests import mockRunLogs, TEST_ROOT, ARMI_RUN_PATH
+from armi.tests import ARMI_RUN_PATH, TEST_ROOT, mockRunLogs
 from armi.utils.directoryChangers import TemporaryDirectoryChanger
 from armi.utils.dynamicImporter import getEntireFamilyTree
 
diff --git a/armi/context.py b/armi/context.py
index dd959e350..8436ceae5 100644
--- a/armi/context.py
+++ b/armi/context.py
@@ -18,7 +18,6 @@
 ARMI's global state information: operating system information, environment data, user data, memory
 parallelism, temporary storage locations, and if operational mode (interactive, gui, or batch).
 """
-from logging import DEBUG
 import datetime
 import enum
 import gc
@@ -26,6 +25,7 @@
 import os
 import sys
 import time
+from logging import DEBUG
 
 # h5py needs to be imported here, so that the disconnectAllHdfDBs() call that gets bound to atexit
 # below doesn't lead to a segfault on python exit.
@@ -38,10 +38,8 @@
 # >>>     import h5py
 #
 # >>> atexit.register(willSegFault)
-
 import h5py  # noqa: F401
 
-
 BLUEPRINTS_IMPORTED = False
 BLUEPRINTS_IMPORT_CONTEXT = ""
 
diff --git a/armi/interfaces.py b/armi/interfaces.py
index ee1c360ea..8f103ea43 100644
--- a/armi/interfaces.py
+++ b/armi/interfaces.py
@@ -24,16 +24,12 @@
 armi.plugins : Register various interfaces
 """
 import copy
-from typing import Union
-from typing import NamedTuple
-from typing import List
-from typing import Dict
+from typing import Dict, List, NamedTuple, Union
 
 import numpy as np
 from numpy.linalg import norm
 
-from armi import getPluginManagerOrFail, settings, utils
-from armi import runLog
+from armi import getPluginManagerOrFail, runLog, settings, utils
 from armi.reactor import parameters
 from armi.utils import textProcessors
 
diff --git a/armi/materials/__init__.py b/armi/materials/__init__.py
index e8f86261d..1078ade88 100644
--- a/armi/materials/__init__.py
+++ b/armi/materials/__init__.py
@@ -32,10 +32,10 @@
 
 The base class for all materials is in :py:mod:`armi.materials.material`.
 """
-from typing import List
 import importlib
 import inspect
 import pkgutil
+from typing import List
 
 from armi.materials.material import Material
 
diff --git a/armi/materials/air.py b/armi/materials/air.py
index 643a1d239..53a339bb3 100644
--- a/armi/materials/air.py
+++ b/armi/materials/air.py
@@ -14,7 +14,7 @@
 
 """Simple air material."""
 from armi.materials import material
-from armi.utils.units import getTk, G_PER_CM3_TO_KG_PER_M3
+from armi.utils.units import G_PER_CM3_TO_KG_PER_M3, getTk
 
 
 class Air(material.Fluid):
diff --git a/armi/materials/be9.py b/armi/materials/be9.py
index 1467064b9..8b7122588 100644
--- a/armi/materials/be9.py
+++ b/armi/materials/be9.py
@@ -18,10 +18,10 @@
 It has a nice (n,2n) reaction and is an inhalation hazard.
 """
 
-from armi.utils.units import getTk
 from armi.materials.material import Material
-from armi.nucDirectory import thermalScattering as tsl
 from armi.nucDirectory import nuclideBases as nb
+from armi.nucDirectory import thermalScattering as tsl
+from armi.utils.units import getTk
 
 
 class Be9(Material):
diff --git a/armi/materials/copper.py b/armi/materials/copper.py
index 8ffb62217..c44815d29 100644
--- a/armi/materials/copper.py
+++ b/armi/materials/copper.py
@@ -14,8 +14,8 @@
 
 """Copper metal."""
 
-from armi.utils.units import getTk
 from armi.materials.material import Material
+from armi.utils.units import getTk
 
 
 class Cu(Material):
diff --git a/armi/materials/graphite.py b/armi/materials/graphite.py
index b7ac48141..0e7ec764f 100644
--- a/armi/materials/graphite.py
+++ b/armi/materials/graphite.py
@@ -15,9 +15,9 @@
 """Graphite is often used as a moderator in gas-cooled nuclear reactors."""
 
 from armi.materials.material import Material
-from armi.utils import units
-from armi.nucDirectory import thermalScattering as tsl
 from armi.nucDirectory import nuclideBases as nb
+from armi.nucDirectory import thermalScattering as tsl
+from armi.utils import units
 
 
 class Graphite(Material):
diff --git a/armi/materials/hafnium.py b/armi/materials/hafnium.py
index 709ec39d0..1694c1c57 100644
--- a/armi/materials/hafnium.py
+++ b/armi/materials/hafnium.py
@@ -14,8 +14,8 @@
 
 """Hafnium is an element that has high capture cross section across multiple isotopes."""
 
-from armi.nucDirectory import nucDir
 from armi.materials.material import SimpleSolid
+from armi.nucDirectory import nucDir
 
 
 class Hafnium(SimpleSolid):
diff --git a/armi/materials/hastelloyN.py b/armi/materials/hastelloyN.py
index fbbe1b2ce..dd60db465 100644
--- a/armi/materials/hastelloyN.py
+++ b/armi/materials/hastelloyN.py
@@ -15,7 +15,7 @@
 """Hastelloy-N is a high-nickel structural material invented by ORNL for handling molten fluoride salts."""
 
 from armi.materials.material import Material
-from armi.utils.units import getTk, getTc
+from armi.utils.units import getTc, getTk
 
 
 class HastelloyN(Material):
diff --git a/armi/materials/material.py b/armi/materials/material.py
index 362b66ece..06593dbe8 100644
--- a/armi/materials/material.py
+++ b/armi/materials/material.py
@@ -21,14 +21,14 @@
 import traceback
 import warnings
 
-from scipy.optimize import fsolve
 import numpy as np
+from scipy.optimize import fsolve
 
 from armi import runLog
 from armi.nucDirectory import nuclideBases
 from armi.reactor.flags import TypeSpec
 from armi.utils import densityTools
-from armi.utils.units import getTk, getTc
+from armi.utils.units import getTc, getTk
 
 # globals
 FAIL_ON_RANGE = False
diff --git a/armi/materials/mox.py b/armi/materials/mox.py
index b2ab41700..61631a412 100644
--- a/armi/materials/mox.py
+++ b/armi/materials/mox.py
@@ -23,8 +23,8 @@
 
 """
 from armi import runLog
-from armi.materials.uraniumOxide import UraniumOxide
 from armi.materials import material
+from armi.materials.uraniumOxide import UraniumOxide
 from armi.nucDirectory import nucDir
 
 
diff --git a/armi/materials/tests/test_materials.py b/armi/materials/tests/test_materials.py
index 1b27df200..22b125f79 100644
--- a/armi/materials/tests/test_materials.py
+++ b/armi/materials/tests/test_materials.py
@@ -12,10 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 """Tests materials.py."""
-from copy import deepcopy
 import math
 import pickle
 import unittest
+from copy import deepcopy
 
 from numpy import testing
 
diff --git a/armi/materials/tests/test_uZr.py b/armi/materials/tests/test_uZr.py
index e2b4eb270..ddd5e67e1 100644
--- a/armi/materials/tests/test_uZr.py
+++ b/armi/materials/tests/test_uZr.py
@@ -13,8 +13,8 @@
 # limitations under the License.
 
 """Tests for simplified UZr material."""
-from unittest import TestCase
 import pickle
+from unittest import TestCase
 
 from armi.materials.uZr import UZr
 
diff --git a/armi/materials/tests/test_water.py b/armi/materials/tests/test_water.py
index d62c190c4..2756e433a 100644
--- a/armi/materials/tests/test_water.py
+++ b/armi/materials/tests/test_water.py
@@ -15,7 +15,7 @@
 """Unit tests for water materials."""
 import unittest
 
-from armi.materials.water import SaturatedWater, SaturatedSteam, Water
+from armi.materials.water import SaturatedSteam, SaturatedWater, Water
 
 
 class Test_Water(unittest.TestCase):
diff --git a/armi/materials/thoriumOxide.py b/armi/materials/thoriumOxide.py
index af5177c5b..28730a7c7 100644
--- a/armi/materials/thoriumOxide.py
+++ b/armi/materials/thoriumOxide.py
@@ -21,8 +21,8 @@
     https://www-pub.iaea.org/mtcd/publications/pdf/te_1450_web.pdf
 """
 from armi import runLog
+from armi.materials.material import FuelMaterial, Material, SimpleSolid
 from armi.utils.units import getTk
-from armi.materials.material import Material, FuelMaterial, SimpleSolid
 
 
 class ThoriumOxide(FuelMaterial, SimpleSolid):
diff --git a/armi/materials/uThZr.py b/armi/materials/uThZr.py
index 4e60c132c..0aaf27719 100644
--- a/armi/materials/uThZr.py
+++ b/armi/materials/uThZr.py
@@ -13,9 +13,9 @@
 # limitations under the License.
 
 """Uranium Thorium Zirconium alloy metal."""
-from armi.utils.units import getTk
-from armi.materials.material import FuelMaterial
 from armi import runLog
+from armi.materials.material import FuelMaterial
+from armi.utils.units import getTk
 
 
 class UThZr(FuelMaterial):
diff --git a/armi/materials/uraniumOxide.py b/armi/materials/uraniumOxide.py
index 64ce7f1b0..4d899df9b 100644
--- a/armi/materials/uraniumOxide.py
+++ b/armi/materials/uraniumOxide.py
@@ -32,7 +32,6 @@
 from armi.nucDirectory import thermalScattering as tsl
 from armi.utils.units import getTk
 
-
 HeatCapacityConstants = collections.namedtuple(
     "HeatCapacityConstants", ["c1", "c2", "c3", "theta", "Ea"]
 )
diff --git a/armi/migration/m0_1_3.py b/armi/migration/m0_1_3.py
index 4e7f4ed49..10ce88910 100644
--- a/armi/migration/m0_1_3.py
+++ b/armi/migration/m0_1_3.py
@@ -15,8 +15,8 @@
 import io
 import re
 
-from armi.migration.base import BlueprintsMigration
 from armi import runLog
+from armi.migration.base import BlueprintsMigration
 
 
 class RemoveCentersFromBlueprints(BlueprintsMigration):
diff --git a/armi/migration/m0_1_6.py b/armi/migration/m0_1_6.py
index 371dd2d65..0f19099ad 100644
--- a/armi/migration/m0_1_6.py
+++ b/armi/migration/m0_1_6.py
@@ -17,9 +17,8 @@
 import re
 
 from armi import runLog
-from armi.settings import caseSettings
 from armi.migration.base import SettingsMigration
-from armi.settings import settingsIO
+from armi.settings import caseSettings, settingsIO
 from armi.utils.units import ASCII_LETTER_A, ASCII_ZERO
 
 AXIAL_CHARS = [
diff --git a/armi/migration/tests/test_m0_1_6.py b/armi/migration/tests/test_m0_1_6.py
index bb0931fdd..94df94c1e 100644
--- a/armi/migration/tests/test_m0_1_6.py
+++ b/armi/migration/tests/test_m0_1_6.py
@@ -17,7 +17,7 @@
 
 from armi.migration.m0_1_6 import ConvertAlphanumLocationSettingsToNum
 from armi.settings import caseSettings
-from armi.settings.settingsIO import SettingsWriter, SettingsReader
+from armi.settings.settingsIO import SettingsReader, SettingsWriter
 
 
 class TestMigration(unittest.TestCase):
diff --git a/armi/migration/tests/test_migration_base.py b/armi/migration/tests/test_migration_base.py
index 67bffcc81..4fb532eac 100644
--- a/armi/migration/tests/test_migration_base.py
+++ b/armi/migration/tests/test_migration_base.py
@@ -15,8 +15,7 @@
 import os
 import unittest
 
-from armi.migration.base import Migration
-from armi.migration.base import SettingsMigration
+from armi.migration.base import Migration, SettingsMigration
 from armi.tests import TEST_ROOT
 
 
diff --git a/armi/mpiActions.py b/armi/mpiActions.py
index ca3fc9ca3..dbf0171cf 100644
--- a/armi/mpiActions.py
+++ b/armi/mpiActions.py
@@ -59,15 +59,10 @@
 import pickle
 import timeit
 
-from armi import context
-from armi import interfaces
-from armi import runLog
-from armi import settings
-from armi import utils
+from armi import context, interfaces, runLog, settings, utils
 from armi.reactor import reactors
 from armi.reactor.parameters import parameterDefinitions
-from armi.utils import iterables
-from armi.utils import tabulate
+from armi.utils import iterables, tabulate
 
 
 class MpiAction:
diff --git a/armi/nucDirectory/elements.py b/armi/nucDirectory/elements.py
index 35b33794c..a7669f5a2 100644
--- a/armi/nucDirectory/elements.py
+++ b/armi/nucDirectory/elements.py
@@ -130,8 +130,8 @@ def getAttributes(element):
 """
 
 import os
-from typing import List
 from enum import Enum
+from typing import List
 
 from armi import context
 from armi.utils.units import HEAVY_METAL_CUTOFF_Z
diff --git a/armi/nucDirectory/nuclideBases.py b/armi/nucDirectory/nuclideBases.py
index 60490c3b9..d9e1130fc 100644
--- a/armi/nucDirectory/nuclideBases.py
+++ b/armi/nucDirectory/nuclideBases.py
@@ -97,11 +97,10 @@ class which is used to organize and store metadata about each nuclide. The
 
 import os
 
-from ruamel.yaml import YAML
 import numpy as np
+from ruamel.yaml import YAML
 
-from armi import context
-from armi import runLog
+from armi import context, runLog
 from armi.nucDirectory import transmutations
 from armi.utils.units import HEAVY_METAL_CUTOFF_Z
 
@@ -116,7 +115,6 @@ class which is used to organize and store metadata about each nuclide. The
 # together to maintain self-consistency.
 from armi.nucDirectory import elements  # noqa: E402
 
-
 # Dictionary of INuclides by the INuclide.name for fast indexing
 byName = {}
 byDBName = {}
diff --git a/armi/nucDirectory/tests/test_nuclideBases.py b/armi/nucDirectory/tests/test_nuclideBases.py
index 0bfcafbb8..1ef1b5900 100644
--- a/armi/nucDirectory/tests/test_nuclideBases.py
+++ b/armi/nucDirectory/tests/test_nuclideBases.py
@@ -23,7 +23,7 @@
 from armi.context import RES
 from armi.nucDirectory import nuclideBases
 from armi.nucDirectory.tests import NUCDIRECTORY_TESTS_DEFAULT_DIR_PATH
-from armi.utils.units import SECONDS_PER_HOUR, AVOGADROS_NUMBER, CURIE_PER_BECQUEREL
+from armi.utils.units import AVOGADROS_NUMBER, CURIE_PER_BECQUEREL, SECONDS_PER_HOUR
 
 
 class TestNuclide(unittest.TestCase):
diff --git a/armi/nucDirectory/tests/test_thermalScattering.py b/armi/nucDirectory/tests/test_thermalScattering.py
index e6e4d9291..a3b676365 100644
--- a/armi/nucDirectory/tests/test_thermalScattering.py
+++ b/armi/nucDirectory/tests/test_thermalScattering.py
@@ -16,8 +16,7 @@
 
 from armi.nucDirectory import nuclideBases as nb
 from armi.nucDirectory import thermalScattering as ts
-from armi.reactor import blocks
-from armi.reactor import components
+from armi.reactor import blocks, components
 
 
 def buildBlockWithTSL():
diff --git a/armi/nucDirectory/thermalScattering.py b/armi/nucDirectory/thermalScattering.py
index ed0857f05..e53f4f9f3 100644
--- a/armi/nucDirectory/thermalScattering.py
+++ b/armi/nucDirectory/thermalScattering.py
@@ -55,9 +55,8 @@
 """
 from typing import Tuple, Union
 
-from armi.nucDirectory import nuclideBases as nb
 from armi.nucDirectory import elements
-
+from armi.nucDirectory import nuclideBases as nb
 
 BE_METAL = "Be-metal"
 BEO = "BeO"
diff --git a/armi/nuclearDataIO/__init__.py b/armi/nuclearDataIO/__init__.py
index 89a2ca925..643cb9a2e 100644
--- a/armi/nuclearDataIO/__init__.py
+++ b/armi/nuclearDataIO/__init__.py
@@ -15,8 +15,6 @@
 """Read and/or write data files associated with nuclear data and reactor physics data."""
 # ruff: noqa: F401
 
-from armi.physics import neutronics
-
 # export the cccc modules here to keep external clients happy,
 # though prefer full imports in new code
 from armi.nuclearDataIO.cccc import (
@@ -34,6 +32,7 @@
     rtflux,
     rzflux,
 )
+from armi.physics import neutronics
 
 
 def getExpectedISOTXSFileName(cycle=None, node=None, suffix=None, xsID=None):
diff --git a/armi/nuclearDataIO/cccc/compxs.py b/armi/nuclearDataIO/cccc/compxs.py
index 99bf03114..0a65049f7 100644
--- a/armi/nuclearDataIO/cccc/compxs.py
+++ b/armi/nuclearDataIO/cccc/compxs.py
@@ -74,18 +74,18 @@
 """
 from traceback import format_exc
 
-from scipy.sparse import csc_matrix
 import numpy as np
+from scipy.sparse import csc_matrix
 
 from armi import runLog
 from armi.nuclearDataIO import cccc
-from armi.nuclearDataIO.xsCollections import XSCollection
 from armi.nuclearDataIO.nuclearFileMetadata import (
-    RegionXSMetadata,
     COMPXS_POWER_CONVERSION_FACTORS,
     REGIONXS_POWER_CONVERT_DIRECTIONAL_DIFF,
+    RegionXSMetadata,
 )
-from armi.utils.properties import unlockImmutableProperties, lockImmutableProperties
+from armi.nuclearDataIO.xsCollections import XSCollection
+from armi.utils.properties import lockImmutableProperties, unlockImmutableProperties
 
 
 def _getRegionIO():
diff --git a/armi/nuclearDataIO/cccc/dif3d.py b/armi/nuclearDataIO/cccc/dif3d.py
index e5d8443ee..1ad9e14dd 100644
--- a/armi/nuclearDataIO/cccc/dif3d.py
+++ b/armi/nuclearDataIO/cccc/dif3d.py
@@ -20,7 +20,6 @@
 from armi import runLog
 from armi.nuclearDataIO import cccc
 
-
 FILE_SPEC_2D_PARAMS = (
     [
         "IPROBT",
diff --git a/armi/nuclearDataIO/cccc/dlayxs.py b/armi/nuclearDataIO/cccc/dlayxs.py
index 4364b92b1..58471bbc4 100644
--- a/armi/nuclearDataIO/cccc/dlayxs.py
+++ b/armi/nuclearDataIO/cccc/dlayxs.py
@@ -27,9 +27,7 @@
 
 from armi import runLog
 from armi.nucDirectory import nuclideBases
-from armi.nuclearDataIO import cccc
-from armi.nuclearDataIO import nuclearFileMetadata
-
+from armi.nuclearDataIO import cccc, nuclearFileMetadata
 
 ALLOWED_NUCLIDE_CONTRIBUTION_ERROR = 1e-5
 
diff --git a/armi/nuclearDataIO/cccc/gamiso.py b/armi/nuclearDataIO/cccc/gamiso.py
index 5c0b4132a..c203c244d 100644
--- a/armi/nuclearDataIO/cccc/gamiso.py
+++ b/armi/nuclearDataIO/cccc/gamiso.py
@@ -37,9 +37,8 @@
 """
 
 from armi import runLog
+from armi.nuclearDataIO import xsLibraries, xsNuclides
 from armi.nuclearDataIO.cccc import isotxs
-from armi.nuclearDataIO import xsLibraries
-from armi.nuclearDataIO import xsNuclides
 
 
 def compare(lib1, lib2):
diff --git a/armi/nuclearDataIO/cccc/isotxs.py b/armi/nuclearDataIO/cccc/isotxs.py
index 69c7747a7..fd3a5f9ba 100644
--- a/armi/nuclearDataIO/cccc/isotxs.py
+++ b/armi/nuclearDataIO/cccc/isotxs.py
@@ -37,16 +37,14 @@
 
 """
 
-import traceback
 import itertools
+import traceback
 
 import numpy as np
 from scipy import sparse
 
 from armi import runLog
-from armi.nuclearDataIO import cccc
-from armi.nuclearDataIO import xsNuclides
-from armi.nuclearDataIO import xsLibraries
+from armi.nuclearDataIO import cccc, xsLibraries, xsNuclides
 from armi.utils import properties
 
 # scattering block definitions from ISOTXS
diff --git a/armi/nuclearDataIO/cccc/pmatrx.py b/armi/nuclearDataIO/cccc/pmatrx.py
index 2ae73ceff..de9cdee69 100644
--- a/armi/nuclearDataIO/cccc/pmatrx.py
+++ b/armi/nuclearDataIO/cccc/pmatrx.py
@@ -26,9 +26,7 @@
 import traceback
 
 from armi import runLog
-from armi.nuclearDataIO import cccc
-from armi.nuclearDataIO import xsNuclides
-from armi.nuclearDataIO import xsLibraries
+from armi.nuclearDataIO import cccc, xsLibraries, xsNuclides
 from armi.utils import properties
 
 
diff --git a/armi/nuclearDataIO/cccc/tests/test_fixsrc.py b/armi/nuclearDataIO/cccc/tests/test_fixsrc.py
index 531b3036f..739a54d70 100644
--- a/armi/nuclearDataIO/cccc/tests/test_fixsrc.py
+++ b/armi/nuclearDataIO/cccc/tests/test_fixsrc.py
@@ -13,10 +13,11 @@
 # limitations under the License.
 
 """Test the reading and writing of the DIF3D FIXSRC file format."""
-import numpy as np
 import os
 import unittest
 
+import numpy as np
+
 from armi.nuclearDataIO.cccc import fixsrc
 from armi.utils.directoryChangers import TemporaryDirectoryChanger
 
diff --git a/armi/nuclearDataIO/cccc/tests/test_gamiso.py b/armi/nuclearDataIO/cccc/tests/test_gamiso.py
index 6fd45bfa3..473b5a0b5 100644
--- a/armi/nuclearDataIO/cccc/tests/test_gamiso.py
+++ b/armi/nuclearDataIO/cccc/tests/test_gamiso.py
@@ -13,9 +13,9 @@
 # limitations under the License.
 
 """Test GAMISO reading and writing."""
-from copy import deepcopy
 import os
 import unittest
+from copy import deepcopy
 
 from armi.nuclearDataIO import xsLibraries
 from armi.nuclearDataIO.cccc import gamiso
diff --git a/armi/nuclearDataIO/nuclearFileMetadata.py b/armi/nuclearDataIO/nuclearFileMetadata.py
index 2e1ddb89a..be894c79b 100644
--- a/armi/nuclearDataIO/nuclearFileMetadata.py
+++ b/armi/nuclearDataIO/nuclearFileMetadata.py
@@ -24,7 +24,6 @@
 from armi import runLog
 from armi.utils import properties
 
-
 COMPXS_POWER_CONVERSION_FACTORS = ["fissionWattSeconds", "captureWattSeconds"]
 REGIONXS_POWER_CONVERT_DIRECTIONAL_DIFF = [
     "powerConvMult",
diff --git a/armi/nuclearDataIO/tests/test_xsCollections.py b/armi/nuclearDataIO/tests/test_xsCollections.py
index 6a85e1734..a039c8bef 100644
--- a/armi/nuclearDataIO/tests/test_xsCollections.py
+++ b/armi/nuclearDataIO/tests/test_xsCollections.py
@@ -17,9 +17,8 @@
 import unittest
 
 from armi import settings
+from armi.nuclearDataIO import isotxs, xsCollections
 from armi.reactor.blocks import HexBlock
-from armi.nuclearDataIO import isotxs
-from armi.nuclearDataIO import xsCollections
 from armi.tests import ISOAA_PATH
 from armi.utils.directoryChangers import TemporaryDirectoryChanger
 from armi.utils.plotting import plotNucXs
diff --git a/armi/nuclearDataIO/tests/test_xsNuclides.py b/armi/nuclearDataIO/tests/test_xsNuclides.py
index 91109e5c2..2985d6e70 100644
--- a/armi/nuclearDataIO/tests/test_xsNuclides.py
+++ b/armi/nuclearDataIO/tests/test_xsNuclides.py
@@ -16,11 +16,8 @@
 import unittest
 
 from armi.nucDirectory import nuclideBases
-from armi.nuclearDataIO import isotxs
-from armi.nuclearDataIO import xsLibraries
-from armi.nuclearDataIO import xsNuclides
-from armi.tests import ISOAA_PATH
-from armi.tests import mockRunLogs
+from armi.nuclearDataIO import isotxs, xsLibraries, xsNuclides
+from armi.tests import ISOAA_PATH, mockRunLogs
 
 
 class NuclideTests(unittest.TestCase):
diff --git a/armi/nuclearDataIO/xsCollections.py b/armi/nuclearDataIO/xsCollections.py
index 913032aef..c2d873b5c 100644
--- a/armi/nuclearDataIO/xsCollections.py
+++ b/armi/nuclearDataIO/xsCollections.py
@@ -42,8 +42,7 @@
 from scipy import sparse
 
 from armi import runLog
-from armi.utils import properties
-from armi.utils import units
+from armi.utils import properties, units
 
 # Basic cross-section types that are represented by a 1-D vector in the multigroup approximation
 # No one is particularly proud of these names...we can claim
diff --git a/armi/nuclearDataIO/xsLibraries.py b/armi/nuclearDataIO/xsLibraries.py
index f38bbaa65..a60d4e5e8 100644
--- a/armi/nuclearDataIO/xsLibraries.py
+++ b/armi/nuclearDataIO/xsLibraries.py
@@ -31,9 +31,7 @@
 
 def compare(lib1, lib2):
     """Compare two XSLibraries, and return True if equal, or False if not."""
-    from armi.nuclearDataIO.cccc import isotxs
-    from armi.nuclearDataIO.cccc import gamiso
-    from armi.nuclearDataIO.cccc import pmatrx
+    from armi.nuclearDataIO.cccc import gamiso, isotxs, pmatrx
 
     equal = True
     # check the nuclides
@@ -177,10 +175,8 @@ def mergeXSLibrariesInWorkingDirectory(
         An alternate directory in which to search for files other than the working directory. The main purpose
         of this is for testing, but it could also be useful to users.
     """
-    from armi.nuclearDataIO.cccc import isotxs
-    from armi.nuclearDataIO.cccc import gamiso
-    from armi.nuclearDataIO.cccc import pmatrx
     from armi import nuclearDataIO
+    from armi.nuclearDataIO.cccc import gamiso, isotxs, pmatrx
 
     baseDir = alternateDirectory or os.getcwd()
     globPath = os.path.join(baseDir, _ISOTXS_EXT + "*")
diff --git a/armi/nuclearDataIO/xsNuclides.py b/armi/nuclearDataIO/xsNuclides.py
index c2c976af4..d59b85daf 100644
--- a/armi/nuclearDataIO/xsNuclides.py
+++ b/armi/nuclearDataIO/xsNuclides.py
@@ -26,9 +26,7 @@
     index (i.e. "PU39AA").
 """
 from armi.nucDirectory import nuclideBases
-from armi.nuclearDataIO import xsCollections
-from armi.nuclearDataIO import xsLibraries
-from armi.nuclearDataIO import nuclearFileMetadata
+from armi.nuclearDataIO import nuclearFileMetadata, xsCollections, xsLibraries
 from armi.utils.customExceptions import warn_when_root
 
 
diff --git a/armi/operators/__init__.py b/armi/operators/__init__.py
index 6eb5ca3cc..7efe833a3 100644
--- a/armi/operators/__init__.py
+++ b/armi/operators/__init__.py
@@ -39,8 +39,8 @@
     math on the reactor model
 """
 
-from armi import context
-from armi import getPluginManagerOrFail
+# ruff: noqa: I001
+from armi import context, getPluginManagerOrFail
 from armi.operators.runTypes import RunTypes
 from armi.operators.operator import Operator
 from armi.operators.operatorMPI import OperatorMPI
diff --git a/armi/operators/operatorMPI.py b/armi/operators/operatorMPI.py
index bb9761653..dcd5a9538 100644
--- a/armi/operators/operatorMPI.py
+++ b/armi/operators/operatorMPI.py
@@ -41,10 +41,7 @@
 import time
 import traceback
 
-from armi import context
-from armi import getPluginManager
-from armi import mpiActions
-from armi import runLog
+from armi import context, getPluginManager, mpiActions, runLog
 from armi.operators.operator import Operator
 from armi.reactor import reactors
 
diff --git a/armi/operators/settingsValidation.py b/armi/operators/settingsValidation.py
index 949b0e09b..ec9446b1c 100644
--- a/armi/operators/settingsValidation.py
+++ b/armi/operators/settingsValidation.py
@@ -24,6 +24,8 @@
 """
 # ruff: noqa: F401
 
-from armi.settings.settingsValidation import createQueryRevertBadPathToDefault
-from armi.settings.settingsValidation import Inspector
-from armi.settings.settingsValidation import Query
+from armi.settings.settingsValidation import (
+    Inspector,
+    Query,
+    createQueryRevertBadPathToDefault,
+)
diff --git a/armi/operators/snapshots.py b/armi/operators/snapshots.py
index 575c8b606..4ce4d2655 100644
--- a/armi/operators/snapshots.py
+++ b/armi/operators/snapshots.py
@@ -14,8 +14,8 @@
 
 """Snapshot Operator."""
 
-from armi.operators import operatorMPI
 from armi import runLog
+from armi.operators import operatorMPI
 
 
 class OperatorSnapshots(operatorMPI.OperatorMPI):
diff --git a/armi/operators/tests/test_operators.py b/armi/operators/tests/test_operators.py
index 54199a5b9..878324123 100644
--- a/armi/operators/tests/test_operators.py
+++ b/armi/operators/tests/test_operators.py
@@ -13,12 +13,12 @@
 # limitations under the License.
 
 """Tests for operators."""
-from unittest.mock import patch
 import collections
 import io
 import os
 import sys
 import unittest
+from unittest.mock import patch
 
 from armi import settings
 from armi.bookkeeping.db.databaseInterface import DatabaseInterface
@@ -27,16 +27,16 @@
 from armi.physics.neutronics.globalFlux.globalFluxInterface import (
     GlobalFluxInterfaceUsingExecuters,
 )
-from armi.reactor.reactors import Reactor, Core
+from armi.reactor.reactors import Core, Reactor
 from armi.reactor.tests import test_reactors
 from armi.settings.caseSettings import Settings
 from armi.settings.fwSettings.globalSettings import (
-    CONF_RUN_TYPE,
-    CONF_TIGHT_COUPLING,
     CONF_CYCLES_SKIP_TIGHT_COUPLING_INTERACTION,
-    CONF_TIGHT_COUPLING_SETTINGS,
     CONF_DEFERRED_INTERFACE_NAMES,
     CONF_DEFERRED_INTERFACES_CYCLE,
+    CONF_RUN_TYPE,
+    CONF_TIGHT_COUPLING,
+    CONF_TIGHT_COUPLING_SETTINGS,
 )
 from armi.tests import mockRunLogs
 from armi.utils import directoryChangers
diff --git a/armi/physics/executers.py b/armi/physics/executers.py
index d99c11c6d..b8deaaca2 100644
--- a/armi/physics/executers.py
+++ b/armi/physics/executers.py
@@ -21,7 +21,7 @@
 import os
 
 from armi import runLog
-from armi.context import getFastPath, MPI_RANK
+from armi.context import MPI_RANK, getFastPath
 from armi.utils import directoryChangers, pathTools
 
 
diff --git a/armi/physics/fuelCycle/__init__.py b/armi/physics/fuelCycle/__init__.py
index 95f4e96d8..384d73f16 100644
--- a/armi/physics/fuelCycle/__init__.py
+++ b/armi/physics/fuelCycle/__init__.py
@@ -28,12 +28,9 @@
 
 The fuel handler plugin moves fuel around in a reactor.
 """
-from armi import interfaces
-from armi import operators
-from armi import plugins
+from armi import interfaces, operators, plugins
 from armi.operators import RunTypes
-from armi.physics.fuelCycle import fuelHandlers
-from armi.physics.fuelCycle import settings
+from armi.physics.fuelCycle import fuelHandlers, settings
 
 ORDER = interfaces.STACK_ORDER.FUEL_MANAGEMENT
 
diff --git a/armi/physics/fuelCycle/fuelHandlerFactory.py b/armi/physics/fuelCycle/fuelHandlerFactory.py
index c6068f62e..babc59ed7 100644
--- a/armi/physics/fuelCycle/fuelHandlerFactory.py
+++ b/armi/physics/fuelCycle/fuelHandlerFactory.py
@@ -14,8 +14,7 @@
 
 """factory for the FuelHandler."""
 from armi.physics.fuelCycle import fuelHandlers
-from armi.physics.fuelCycle.settings import CONF_FUEL_HANDLER_NAME
-from armi.physics.fuelCycle.settings import CONF_SHUFFLE_LOGIC
+from armi.physics.fuelCycle.settings import CONF_FUEL_HANDLER_NAME, CONF_SHUFFLE_LOGIC
 from armi.utils import directoryChangers, pathTools
 
 
diff --git a/armi/physics/fuelCycle/fuelHandlerInterface.py b/armi/physics/fuelCycle/fuelHandlerInterface.py
index 0425cdec9..85bd52655 100644
--- a/armi/physics/fuelCycle/fuelHandlerInterface.py
+++ b/armi/physics/fuelCycle/fuelHandlerInterface.py
@@ -14,12 +14,13 @@
 
 """A place for the FuelHandler's Interface."""
 
-from armi import interfaces
-from armi import runLog
+from armi import interfaces, runLog
 from armi.physics.fuelCycle import fuelHandlerFactory
-from armi.physics.fuelCycle.settings import CONF_PLOT_SHUFFLE_ARROWS
-from armi.physics.fuelCycle.settings import CONF_RUN_LATTICE_BEFORE_SHUFFLING
-from armi.physics.fuelCycle.settings import CONF_SHUFFLE_LOGIC
+from armi.physics.fuelCycle.settings import (
+    CONF_PLOT_SHUFFLE_ARROWS,
+    CONF_RUN_LATTICE_BEFORE_SHUFFLING,
+    CONF_SHUFFLE_LOGIC,
+)
 from armi.utils import plotting
 
 
diff --git a/armi/physics/fuelCycle/fuelHandlers.py b/armi/physics/fuelCycle/fuelHandlers.py
index 9f99d5a8f..74697cd63 100644
--- a/armi/physics/fuelCycle/fuelHandlers.py
+++ b/armi/physics/fuelCycle/fuelHandlers.py
@@ -37,8 +37,8 @@
 from armi.physics.fuelCycle.fuelHandlerInterface import FuelHandlerInterface
 from armi.physics.fuelCycle.settings import CONF_ASSEMBLY_ROTATION_ALG
 from armi.reactor.flags import Flags
-from armi.utils.customExceptions import InputError
 from armi.reactor.parameters import ParamLocation
+from armi.utils.customExceptions import InputError
 
 
 class FuelHandler:
diff --git a/armi/physics/fuelCycle/settings.py b/armi/physics/fuelCycle/settings.py
index 647a279ae..fd50301c3 100644
--- a/armi/physics/fuelCycle/settings.py
+++ b/armi/physics/fuelCycle/settings.py
@@ -12,8 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 """Settings for generic fuel cycle code."""
-from armi.settings import setting
-from armi.settings import settingsValidation
+from armi.settings import setting, settingsValidation
 
 CONF_ASSEM_ROTATION_STATIONARY = "assemblyRotationStationary"
 CONF_ASSEMBLY_ROTATION_ALG = "assemblyRotationAlgorithm"
diff --git a/armi/physics/fuelCycle/tests/test_fuelHandlers.py b/armi/physics/fuelCycle/tests/test_fuelHandlers.py
index b6bbc14a0..2ea5e57d6 100644
--- a/armi/physics/fuelCycle/tests/test_fuelHandlers.py
+++ b/armi/physics/fuelCycle/tests/test_fuelHandlers.py
@@ -38,12 +38,12 @@
 )
 from armi.reactor import assemblies, blocks, components, grids
 from armi.reactor.flags import Flags
+from armi.reactor.parameters import ParamLocation
 from armi.reactor.tests import test_reactors
 from armi.reactor.zones import Zone
 from armi.settings import caseSettings
 from armi.tests import TEST_ROOT, ArmiTestHelper, mockRunLogs
 from armi.utils import directoryChangers
-from armi.reactor.parameters import ParamLocation
 
 
 class FuelHandlerTestHelper(ArmiTestHelper):
diff --git a/armi/physics/fuelPerformance/executers.py b/armi/physics/fuelPerformance/executers.py
index 7cc0af2fb..2bd92fac4 100644
--- a/armi/physics/fuelPerformance/executers.py
+++ b/armi/physics/fuelPerformance/executers.py
@@ -22,15 +22,14 @@
 """
 
 from armi.physics import executers
-
 from armi.physics.fuelPerformance.settings import (
-    CONF_FUEL_PERFORMANCE_ENGINE,
     CONF_AXIAL_EXPANSION,
     CONF_BOND_REMOVAL,
-    CONF_FGR_REMOVAL,
-    CONF_CLADDING_WASTAGE,
     CONF_CLADDING_STRAIN,
+    CONF_CLADDING_WASTAGE,
+    CONF_FGR_REMOVAL,
     CONF_FGYF,
+    CONF_FUEL_PERFORMANCE_ENGINE,
 )
 
 
diff --git a/armi/physics/fuelPerformance/parameters.py b/armi/physics/fuelPerformance/parameters.py
index 604a37015..47d09f32a 100644
--- a/armi/physics/fuelPerformance/parameters.py
+++ b/armi/physics/fuelPerformance/parameters.py
@@ -13,8 +13,8 @@
 # limitations under the License.
 """Parameter definitions for fuel performance plugins."""
 from armi.reactor import parameters
-from armi.reactor.parameters import ParamLocation
 from armi.reactor.blocks import Block
+from armi.reactor.parameters import ParamLocation
 from armi.utils import units
 
 
diff --git a/armi/physics/fuelPerformance/plugin.py b/armi/physics/fuelPerformance/plugin.py
index 9e82f7f50..60bdbf07f 100644
--- a/armi/physics/fuelPerformance/plugin.py
+++ b/armi/physics/fuelPerformance/plugin.py
@@ -14,11 +14,9 @@
 
 """Generic Fuel Performance Plugin."""
 
-from armi import plugins
-from armi import interfaces
+from armi import interfaces, plugins
 from armi.physics.fuelPerformance import settings
 
-
 ORDER = interfaces.STACK_ORDER.CROSS_SECTIONS
 
 
diff --git a/armi/physics/fuelPerformance/settings.py b/armi/physics/fuelPerformance/settings.py
index edef934f2..91f190637 100644
--- a/armi/physics/fuelPerformance/settings.py
+++ b/armi/physics/fuelPerformance/settings.py
@@ -17,7 +17,6 @@
 from armi.settings import setting
 from armi.settings.settingsValidation import Query
 
-
 CONF_AXIAL_EXPANSION = "axialExpansion"
 CONF_BOND_REMOVAL = "bondRemoval"
 CONF_CLADDING_STRAIN = "claddingStrain"
diff --git a/armi/physics/neutronics/crossSectionSettings.py b/armi/physics/neutronics/crossSectionSettings.py
index a683f7d7f..b1d0d0b40 100644
--- a/armi/physics/neutronics/crossSectionSettings.py
+++ b/armi/physics/neutronics/crossSectionSettings.py
@@ -31,8 +31,7 @@
 
 import voluptuous as vol
 
-from armi import context
-from armi import runLog
+from armi import context, runLog
 from armi.physics.neutronics import crossSectionGroupManager
 from armi.physics.neutronics.crossSectionGroupManager import BLOCK_COLLECTIONS
 from armi.settings import Setting
diff --git a/armi/physics/neutronics/diffIsotxs.py b/armi/physics/neutronics/diffIsotxs.py
index 5ac4c1e59..d94baa195 100644
--- a/armi/physics/neutronics/diffIsotxs.py
+++ b/armi/physics/neutronics/diffIsotxs.py
@@ -52,8 +52,7 @@ def addOptions(self):
         )
 
     def invoke(self):
-        from armi.nuclearDataIO import isotxs
-        from armi.nuclearDataIO import xsLibraries
+        from armi.nuclearDataIO import isotxs, xsLibraries
 
         runLog.setVerbosity(0)
         refIsotxs = isotxs.readBinary(self.args.reference)
diff --git a/armi/physics/neutronics/energyGroups.py b/armi/physics/neutronics/energyGroups.py
index 5da90636d..4482f4a29 100644
--- a/armi/physics/neutronics/energyGroups.py
+++ b/armi/physics/neutronics/energyGroups.py
@@ -20,13 +20,13 @@
 import numpy as np
 
 from armi import runLog
-from armi.utils.mathematics import findNearestValue
 from armi.physics.neutronics.const import (
     FAST_FLUX_THRESHOLD_EV,
+    HIGH_ENERGY_EV,
     MAXIMUM_XS_LIBRARY_ENERGY,
     ULTRA_FINE_GROUP_LETHARGY_WIDTH,
-    HIGH_ENERGY_EV,
 )
+from armi.utils.mathematics import findNearestValue
 
 
 def getFastFluxGroupCutoff(eGrpStruc):
diff --git a/armi/physics/neutronics/fissionProductModel/__init__.py b/armi/physics/neutronics/fissionProductModel/__init__.py
index 1a9a15347..014243375 100644
--- a/armi/physics/neutronics/fissionProductModel/__init__.py
+++ b/armi/physics/neutronics/fissionProductModel/__init__.py
@@ -15,6 +15,7 @@
 """The Fission product model subpackage."""
 
 import os
+
 from armi.context import RES
 
 REFERENCE_LUMPED_FISSION_PRODUCT_FILE = os.path.join(
diff --git a/armi/physics/neutronics/fissionProductModel/fissionProductModel.py b/armi/physics/neutronics/fissionProductModel/fissionProductModel.py
index 73b998fa7..218ae3f2d 100644
--- a/armi/physics/neutronics/fissionProductModel/fissionProductModel.py
+++ b/armi/physics/neutronics/fissionProductModel/fissionProductModel.py
@@ -96,15 +96,13 @@
     is initialized and may not be an out-of-the-box general solution.
 """
 
-from armi import runLog
-from armi import interfaces
-from armi.reactor.flags import Flags
+from armi import interfaces, runLog
 from armi.physics.neutronics.fissionProductModel import lumpedFissionProduct
 from armi.physics.neutronics.fissionProductModel.fissionProductModelSettings import (
     CONF_FP_MODEL,
     CONF_MAKE_ALL_BLOCK_LFPS_INDEPENDENT,
 )
-
+from armi.reactor.flags import Flags
 
 NUM_FISSION_PRODUCTS_PER_LFP = 2.0
 
diff --git a/armi/physics/neutronics/fissionProductModel/fissionProductModelSettings.py b/armi/physics/neutronics/fissionProductModel/fissionProductModelSettings.py
index d23e1b142..e9c48c12d 100644
--- a/armi/physics/neutronics/fissionProductModel/fissionProductModelSettings.py
+++ b/armi/physics/neutronics/fissionProductModel/fissionProductModelSettings.py
@@ -14,8 +14,8 @@
 
 """Settings related to the fission product model."""
 
-from armi.settings import setting
 from armi.physics.neutronics import fissionProductModel
+from armi.settings import setting
 
 CONF_FP_MODEL = "fpModel"
 CONF_MAKE_ALL_BLOCK_LFPS_INDEPENDENT = "makeAllBlockLFPsIndependent"
diff --git a/armi/physics/neutronics/fissionProductModel/lumpedFissionProduct.py b/armi/physics/neutronics/fissionProductModel/lumpedFissionProduct.py
index 4a5c1ce75..3aa8e3e56 100644
--- a/armi/physics/neutronics/fissionProductModel/lumpedFissionProduct.py
+++ b/armi/physics/neutronics/fissionProductModel/lumpedFissionProduct.py
@@ -20,13 +20,11 @@
 """
 import os
 
-from armi.nucDirectory import nuclideBases
 from armi import runLog
-from armi.nucDirectory import elements
-
+from armi.nucDirectory import elements, nuclideBases
 from armi.physics.neutronics.fissionProductModel.fissionProductModelSettings import (
-    CONF_LFP_COMPOSITION_FILE_PATH,
     CONF_FP_MODEL,
+    CONF_LFP_COMPOSITION_FILE_PATH,
 )
 
 
diff --git a/armi/physics/neutronics/fissionProductModel/tests/test_fissionProductModel.py b/armi/physics/neutronics/fissionProductModel/tests/test_fissionProductModel.py
index a21b5abd9..0ec9dd6f7 100644
--- a/armi/physics/neutronics/fissionProductModel/tests/test_fissionProductModel.py
+++ b/armi/physics/neutronics/fissionProductModel/tests/test_fissionProductModel.py
@@ -16,14 +16,14 @@
 
 from armi import nuclideBases
 from armi.physics.neutronics.fissionProductModel import fissionProductModel
+from armi.physics.neutronics.fissionProductModel.fissionProductModelSettings import (
+    CONF_FISSION_PRODUCT_LIBRARY_NAME,
+    CONF_FP_MODEL,
+)
 from armi.physics.neutronics.fissionProductModel.tests import test_lumpedFissionProduct
 from armi.physics.neutronics.isotopicDepletion.isotopicDepletionInterface import (
     isDepletable,
 )
-from armi.physics.neutronics.fissionProductModel.fissionProductModelSettings import (
-    CONF_FP_MODEL,
-    CONF_FISSION_PRODUCT_LIBRARY_NAME,
-)
 from armi.reactor.flags import Flags
 from armi.reactor.tests.test_reactors import (
     buildOperatorOfEmptyHexBlocks,
diff --git a/armi/physics/neutronics/fissionProductModel/tests/test_lumpedFissionProduct.py b/armi/physics/neutronics/fissionProductModel/tests/test_lumpedFissionProduct.py
index 9d5f7f796..2197060ec 100644
--- a/armi/physics/neutronics/fissionProductModel/tests/test_lumpedFissionProduct.py
+++ b/armi/physics/neutronics/fissionProductModel/tests/test_lumpedFissionProduct.py
@@ -13,24 +13,24 @@
 # limitations under the License.
 
 """Tests for lumpedFissionProduce module."""
-import unittest
 import io
 import math
 import os
+import unittest
 
+from armi.context import RES
+from armi.nucDirectory import nuclideBases
 from armi.physics.neutronics.fissionProductModel import (
-    lumpedFissionProduct,
     REFERENCE_LUMPED_FISSION_PRODUCT_FILE,
+    lumpedFissionProduct,
 )
-from armi.context import RES
-from armi.settings import Settings
-from armi.reactor.tests.test_reactors import buildOperatorOfEmptyHexBlocks
-from armi.reactor.flags import Flags
-from armi.nucDirectory import nuclideBases
 from armi.physics.neutronics.fissionProductModel.fissionProductModelSettings import (
     CONF_FP_MODEL,
     CONF_LFP_COMPOSITION_FILE_PATH,
 )
+from armi.reactor.flags import Flags
+from armi.reactor.tests.test_reactors import buildOperatorOfEmptyHexBlocks
+from armi.settings import Settings
 
 LFP_TEXT = """LFP35 GE73   5.9000E-06
 LFP35 GE74    1.4000E-05
diff --git a/armi/physics/neutronics/globalFlux/globalFluxInterface.py b/armi/physics/neutronics/globalFlux/globalFluxInterface.py
index 9e51adab5..aef9d2800 100644
--- a/armi/physics/neutronics/globalFlux/globalFluxInterface.py
+++ b/armi/physics/neutronics/globalFlux/globalFluxInterface.py
@@ -20,20 +20,15 @@
 
 import numpy as np
 
-from armi import interfaces
-from armi import runLog
-from armi.physics import constants
-from armi.physics import executers
-from armi.physics import neutronics
-from armi.reactor import geometry
-from armi.reactor import reactors
-from armi.physics.neutronics.globalFlux import RX_PARAM_NAMES, RX_ABS_MICRO_LABELS
+from armi import interfaces, runLog
+from armi.physics import constants, executers, neutronics
+from armi.physics.neutronics.globalFlux import RX_ABS_MICRO_LABELS, RX_PARAM_NAMES
+from armi.reactor import geometry, reactors
 from armi.reactor.blocks import Block
-from armi.reactor.converters import geometryConverters
-from armi.reactor.converters import uniformMesh
+from armi.reactor.converters import geometryConverters, uniformMesh
 from armi.reactor.flags import Flags
 from armi.settings.caseSettings import Settings
-from armi.utils import units, codeTiming, getMaxBurnSteps, getBurnSteps
+from armi.utils import codeTiming, getBurnSteps, getMaxBurnSteps, units
 
 ORDER = interfaces.STACK_ORDER.FLUX
 
@@ -496,9 +491,9 @@ def fromUserSettings(self, cs: Settings):
             CONF_XS_KERNEL,
         )
         from armi.settings.fwSettings.globalSettings import (
-            CONF_PHYSICS_FILES,
-            CONF_NON_UNIFORM_ASSEM_FLAGS,
             CONF_DETAILED_AXIAL_EXPANSION,
+            CONF_NON_UNIFORM_ASSEM_FLAGS,
+            CONF_PHYSICS_FILES,
         )
 
         self.kernelName = cs[CONF_NEUTRONICS_KERNEL]
diff --git a/armi/physics/neutronics/globalFlux/tests/test_globalFluxInterface.py b/armi/physics/neutronics/globalFlux/tests/test_globalFluxInterface.py
index 09adacaf8..e7a79d909 100644
--- a/armi/physics/neutronics/globalFlux/tests/test_globalFluxInterface.py
+++ b/armi/physics/neutronics/globalFlux/tests/test_globalFluxInterface.py
@@ -27,8 +27,7 @@
 from armi.reactor import geometry
 from armi.reactor.blocks import HexBlock
 from armi.reactor.flags import Flags
-from armi.reactor.tests import test_blocks
-from armi.reactor.tests import test_reactors
+from armi.reactor.tests import test_blocks, test_reactors
 from armi.tests import ISOAA_PATH
 
 
diff --git a/armi/physics/neutronics/latticePhysics/__init__.py b/armi/physics/neutronics/latticePhysics/__init__.py
index 1d94e02b7..b66824141 100644
--- a/armi/physics/neutronics/latticePhysics/__init__.py
+++ b/armi/physics/neutronics/latticePhysics/__init__.py
@@ -16,8 +16,7 @@
 # ruff: noqa: F401
 import os
 
-from armi import interfaces
-from armi import settings
+from armi import interfaces, settings
 from armi.physics import neutronics
 from armi.utils import pathTools
 
diff --git a/armi/physics/neutronics/latticePhysics/latticePhysicsWriter.py b/armi/physics/neutronics/latticePhysics/latticePhysicsWriter.py
index c52ed664a..09f636f2e 100644
--- a/armi/physics/neutronics/latticePhysics/latticePhysicsWriter.py
+++ b/armi/physics/neutronics/latticePhysics/latticePhysicsWriter.py
@@ -21,30 +21,28 @@
 physics codes.
 """
 
-import math
 import collections
+import math
 
 import numpy as np
 import ordered_set
 
-from armi import runLog
-from armi import interfaces
-from armi.physics import neutronics
-from armi.reactor import components
+from armi import interfaces, runLog
 from armi.nucDirectory import nuclideBases
-from armi.reactor.flags import Flags
-from armi.utils.customExceptions import warn_when_root
+from armi.physics import neutronics
 from armi.physics.neutronics.const import CONF_CROSS_SECTION
 from armi.physics.neutronics.fissionProductModel.fissionProductModelSettings import (
     CONF_FP_MODEL,
 )
 from armi.physics.neutronics.settings import (
+    CONF_GEN_XS,
     CONF_MINIMUM_FISSILE_FRACTION,
     CONF_MINIMUM_NUCLIDE_DENSITY,
 )
-from armi.physics.neutronics.settings import CONF_GEN_XS
+from armi.reactor import components
+from armi.reactor.flags import Flags
 from armi.settings.fwSettings.globalSettings import CONF_DETAILED_AXIAL_EXPANSION
-
+from armi.utils.customExceptions import warn_when_root
 
 # number of decimal places to round temperatures to in _groupNuclidesByTemperature
 _NUM_DIGITS_ROUND_TEMPERATURE = 3
diff --git a/armi/physics/neutronics/latticePhysics/tests/test_latticeInterface.py b/armi/physics/neutronics/latticePhysics/tests/test_latticeInterface.py
index 63a4bfd38..11e4cdd57 100644
--- a/armi/physics/neutronics/latticePhysics/tests/test_latticeInterface.py
+++ b/armi/physics/neutronics/latticePhysics/tests/test_latticeInterface.py
@@ -13,27 +13,26 @@
 # limitations under the License.
 
 """Test the Lattice Interface."""
-from collections import OrderedDict
 import unittest
+from collections import OrderedDict
 
-from armi.physics.neutronics.latticePhysics.latticePhysicsInterface import (
-    LatticePhysicsInterface,
-)
 from armi import settings
 from armi.nuclearDataIO.cccc import isotxs
 from armi.operators.operator import Operator
 from armi.physics.neutronics import LatticePhysicsFrequency
 from armi.physics.neutronics.crossSectionGroupManager import CrossSectionGroupManager
-from armi.physics.neutronics.settings import CONF_GEN_XS
-from armi.physics.neutronics.settings import CONF_GLOBAL_FLUX_ACTIVE
-from armi.reactor.reactors import Reactor, Core
-from armi.reactor.tests.test_blocks import buildSimpleFuelBlock
-from armi.tests import mockRunLogs
+from armi.physics.neutronics.latticePhysics.latticePhysicsInterface import (
+    LatticePhysicsInterface,
+)
+from armi.physics.neutronics.settings import CONF_GEN_XS, CONF_GLOBAL_FLUX_ACTIVE
 from armi.reactor.assemblies import (
     HexAssembly,
     grids,
 )
-from armi.tests import ISOAA_PATH
+from armi.reactor.reactors import Core, Reactor
+from armi.reactor.tests.test_blocks import buildSimpleFuelBlock
+from armi.tests import ISOAA_PATH, mockRunLogs
+
 
 # As an interface, LatticePhysicsInterface must be subclassed to be used
 class LatticeInterfaceTester(LatticePhysicsInterface):
diff --git a/armi/physics/neutronics/latticePhysics/tests/test_latticeWriter.py b/armi/physics/neutronics/latticePhysics/tests/test_latticeWriter.py
index 7b4056c50..89f1b1225 100644
--- a/armi/physics/neutronics/latticePhysics/tests/test_latticeWriter.py
+++ b/armi/physics/neutronics/latticePhysics/tests/test_latticeWriter.py
@@ -13,8 +13,8 @@
 # limitations under the License.
 
 """Test the Lattice Physics Writer."""
-from collections import defaultdict
 import unittest
+from collections import defaultdict
 
 from armi.physics.neutronics.const import CONF_CROSS_SECTION
 from armi.physics.neutronics.fissionProductModel.fissionProductModelSettings import (
@@ -27,8 +27,8 @@
     LatticePhysicsWriter,
 )
 from armi.physics.neutronics.settings import (
-    CONF_XS_BLOCK_REPRESENTATION,
     CONF_DISABLE_BLOCK_TYPE_EXCLUSION_IN_XS_GENERATION,
+    CONF_XS_BLOCK_REPRESENTATION,
 )
 from armi.testing import loadTestReactor
 from armi.tests import TEST_ROOT
diff --git a/armi/physics/neutronics/macroXSGenerationInterface.py b/armi/physics/neutronics/macroXSGenerationInterface.py
index 2665b82cc..99928d9dc 100644
--- a/armi/physics/neutronics/macroXSGenerationInterface.py
+++ b/armi/physics/neutronics/macroXSGenerationInterface.py
@@ -20,10 +20,7 @@
     \Sigma_i = N_i \sigma_i
 
 """
-from armi import context
-from armi import interfaces
-from armi import mpiActions
-from armi import runLog
+from armi import context, interfaces, mpiActions, runLog
 from armi.nuclearDataIO import xsCollections
 from armi.physics.neutronics.settings import CONF_MINIMUM_NUCLIDE_DENSITY
 from armi.utils import getBurnSteps, iterables
diff --git a/armi/physics/neutronics/reports.py b/armi/physics/neutronics/reports.py
index 5989fbeb1..e0623df3e 100644
--- a/armi/physics/neutronics/reports.py
+++ b/armi/physics/neutronics/reports.py
@@ -14,9 +14,7 @@
 
 from collections import defaultdict
 
-from armi.bookkeeping.report import newReportUtils
-from armi.bookkeeping.report import newReports
-from armi.reactor.flags import Flags
+from armi.bookkeeping.report import newReports, newReportUtils
 from armi.physics.neutronics.fissionProductModel.fissionProductModelSettings import (
     CONF_FP_MODEL,
 )
@@ -25,6 +23,7 @@
     CONF_NEUTRONICS_KERNEL,
     CONF_NEUTRONICS_TYPE,
 )
+from armi.reactor.flags import Flags
 
 
 def insertNeutronicsReport(r, cs, report, stage):
diff --git a/armi/physics/neutronics/settings.py b/armi/physics/neutronics/settings.py
index d6aaa42bb..1677096d3 100644
--- a/armi/physics/neutronics/settings.py
+++ b/armi/physics/neutronics/settings.py
@@ -19,15 +19,13 @@
 from armi.physics.neutronics import LatticePhysicsFrequency
 from armi.physics.neutronics.const import NEUTRON
 from armi.physics.neutronics.energyGroups import GROUP_STRUCTURE
-from armi.settings import setting
-from armi.settings import settingsValidation
-from armi.utils import directoryChangers
+from armi.settings import setting, settingsValidation
 from armi.settings.fwSettings.globalSettings import (
     CONF_DETAILED_AXIAL_EXPANSION,
     CONF_NON_UNIFORM_ASSEM_FLAGS,
     CONF_RUN_TYPE,
 )
-
+from armi.utils import directoryChangers
 
 CONF_BC_COEFFICIENT = "bcCoefficient"
 CONF_BOUNDARIES = "boundaries"
diff --git a/armi/physics/neutronics/tests/test_crossSectionSettings.py b/armi/physics/neutronics/tests/test_crossSectionSettings.py
index 17499e806..b2882656d 100644
--- a/armi/physics/neutronics/tests/test_crossSectionSettings.py
+++ b/armi/physics/neutronics/tests/test_crossSectionSettings.py
@@ -15,22 +15,24 @@
 import io
 import unittest
 
-from ruamel.yaml import YAML
 import voluptuous as vol
+from ruamel.yaml import YAML
 
 from armi import settings
 from armi.physics.neutronics.const import CONF_CROSS_SECTION
-from armi.physics.neutronics.crossSectionSettings import CONF_BLOCK_REPRESENTATION
-from armi.physics.neutronics.crossSectionSettings import CONF_GEOM
-from armi.physics.neutronics.crossSectionSettings import XSModelingOptions
-from armi.physics.neutronics.crossSectionSettings import XSSettingDef
-from armi.physics.neutronics.crossSectionSettings import XSSettings
-from armi.physics.neutronics.crossSectionSettings import xsSettingsValidator
-from armi.physics.neutronics.tests.test_neutronicsPlugin import XS_EXAMPLE
+from armi.physics.neutronics.crossSectionSettings import (
+    CONF_BLOCK_REPRESENTATION,
+    CONF_GEOM,
+    XSModelingOptions,
+    XSSettingDef,
+    XSSettings,
+    xsSettingsValidator,
+)
 from armi.physics.neutronics.settings import (
-    CONF_XS_BLOCK_REPRESENTATION,
     CONF_DISABLE_BLOCK_TYPE_EXCLUSION_IN_XS_GENERATION,
+    CONF_XS_BLOCK_REPRESENTATION,
 )
+from armi.physics.neutronics.tests.test_neutronicsPlugin import XS_EXAMPLE
 from armi.settings import caseSettings
 
 
diff --git a/armi/physics/neutronics/tests/test_crossSectionTable.py b/armi/physics/neutronics/tests/test_crossSectionTable.py
index 9c9abe5b7..a961be50e 100644
--- a/armi/physics/neutronics/tests/test_crossSectionTable.py
+++ b/armi/physics/neutronics/tests/test_crossSectionTable.py
@@ -17,6 +17,8 @@
 from armi.nuclearDataIO.cccc import isotxs
 from armi.physics.neutronics.isotopicDepletion import (
     crossSectionTable,
+)
+from armi.physics.neutronics.isotopicDepletion import (
     isotopicDepletionInterface as idi,
 )
 from armi.physics.neutronics.latticePhysics import ORDER
diff --git a/armi/physics/neutronics/tests/test_neutronicsPlugin.py b/armi/physics/neutronics/tests/test_neutronicsPlugin.py
index 00c855ada..ca93f62c7 100644
--- a/armi/physics/neutronics/tests/test_neutronicsPlugin.py
+++ b/armi/physics/neutronics/tests/test_neutronicsPlugin.py
@@ -22,26 +22,23 @@
 from armi.physics import neutronics
 from armi.physics.neutronics.const import CONF_CROSS_SECTION
 from armi.physics.neutronics.settings import (
+    CONF_BOUNDARIES,
+    CONF_DPA_XS_SET,
     CONF_GEN_XS,
     CONF_GLOBAL_FLUX_ACTIVE,
+    CONF_GRID_PLATE_DPA_XS_SET,
     CONF_GROUP_STRUCTURE,
-    CONF_DPA_XS_SET,
-    CONF_OUTERS_,
     CONF_INNERS_,
-    CONF_NEUTRONICS_KERNEL,
     CONF_LATTICE_PHYSICS_FREQUENCY,
+    CONF_NEUTRONICS_KERNEL,
+    CONF_OUTERS_,
     getNeutronicsSettingValidators,
 )
-from armi.settings import caseSettings
-from armi.settings import settingsValidation
+from armi.settings import caseSettings, settingsValidation
 from armi.settings.fwSettings.globalSettings import CONF_RUN_TYPE
 from armi.tests import TEST_ROOT
 from armi.tests.test_plugins import TestPlugin
 from armi.utils import directoryChangers
-from armi.physics.neutronics.settings import (
-    CONF_BOUNDARIES,
-    CONF_GRID_PLATE_DPA_XS_SET,
-)
 
 XS_EXAMPLE = """AA:
     geometry: 0D
diff --git a/armi/physics/thermalHydraulics/parameters.py b/armi/physics/thermalHydraulics/parameters.py
index a6af2c1ba..8939abf61 100644
--- a/armi/physics/thermalHydraulics/parameters.py
+++ b/armi/physics/thermalHydraulics/parameters.py
@@ -13,8 +13,8 @@
 # limitations under the License.
 """Parameter definitions for thermal hydraulic plugins."""
 from armi.reactor import parameters
-from armi.reactor.parameters import ParamLocation
 from armi.reactor.blocks import Block
+from armi.reactor.parameters import ParamLocation
 from armi.utils import units
 
 
diff --git a/armi/physics/thermalHydraulics/plugin.py b/armi/physics/thermalHydraulics/plugin.py
index 0d675a054..562dc880b 100644
--- a/armi/physics/thermalHydraulics/plugin.py
+++ b/armi/physics/thermalHydraulics/plugin.py
@@ -20,10 +20,8 @@
 """
 
 
-from armi import plugins
+from armi import interfaces, plugins
 from armi.physics.thermalHydraulics import settings
-from armi import interfaces
-
 
 ORDER = interfaces.STACK_ORDER.THERMAL_HYDRAULICS
 
diff --git a/armi/plugins.py b/armi/plugins.py
index fdeb4cd66..d5fd810a6 100644
--- a/armi/plugins.py
+++ b/armi/plugins.py
@@ -118,7 +118,7 @@
       replaced with plugin-based fuel handler logic.
 
 """
-from typing import Callable, Dict, List, Union, TYPE_CHECKING
+from typing import TYPE_CHECKING, Callable, Dict, List, Union
 
 import pluggy
 
diff --git a/armi/reactor/__init__.py b/armi/reactor/__init__.py
index c7c3981d0..3536b698c 100644
--- a/armi/reactor/__init__.py
+++ b/armi/reactor/__init__.py
@@ -49,14 +49,13 @@
 See :doc:`/developer/index`.
 """
 
-from typing import Dict, Callable, Union, TYPE_CHECKING
+from typing import TYPE_CHECKING, Callable, Dict, Union
 
-from armi import materials
-from armi import plugins
+from armi import materials, plugins
 
 if TYPE_CHECKING:
-    from armi.reactor.reactors import Core
     from armi.reactor.excoreStructure import ExcoreStructure
+    from armi.reactor.reactors import Core
     from armi.reactor.spentFuelPool import SpentFuelPool
 
 
@@ -79,9 +78,9 @@ def beforeReactorConstruction(cs) -> None:
     @staticmethod
     @plugins.HOOKIMPL
     def defineBlockTypes():
-        from armi.reactor.components.basicShapes import Rectangle, Hexagon
-        from armi.reactor.components.volumetricShapes import RadialSegment
         from armi.reactor import blocks
+        from armi.reactor.components.basicShapes import Hexagon, Rectangle
+        from armi.reactor.components.volumetricShapes import RadialSegment
 
         return [
             (Rectangle, blocks.CartesianBlock),
@@ -92,8 +91,8 @@ def defineBlockTypes():
     @staticmethod
     @plugins.HOOKIMPL
     def defineAssemblyTypes():
-        from armi.reactor.blocks import HexBlock, CartesianBlock, ThRZBlock
-        from armi.reactor.assemblies import HexAssembly, CartesianAssembly, ThRZAssembly
+        from armi.reactor.assemblies import CartesianAssembly, HexAssembly, ThRZAssembly
+        from armi.reactor.blocks import CartesianBlock, HexBlock, ThRZBlock
 
         return [
             (HexBlock, HexAssembly),
@@ -106,9 +105,9 @@ def defineAssemblyTypes():
     def defineSystemBuilders() -> Dict[
         str, Callable[[str], Union["Core", "ExcoreStructure", "SpentFuelPool"]]
     ]:
-        from armi.reactor.spentFuelPool import SpentFuelPool
         from armi.reactor.excoreStructure import ExcoreStructure
         from armi.reactor.reactors import Core
+        from armi.reactor.spentFuelPool import SpentFuelPool
 
         return {
             "core": Core,
diff --git a/armi/reactor/assemblies.py b/armi/reactor/assemblies.py
index da55c7694..149c04690 100644
--- a/armi/reactor/assemblies.py
+++ b/armi/reactor/assemblies.py
@@ -20,19 +20,16 @@
 import copy
 import math
 import pickle
+from collections.abc import Iterable
 from random import randint
 from typing import ClassVar, Optional, Type
-from collections.abc import Iterable
 
 import numpy as np
 from scipy import interpolate
 
 from armi import runLog
 from armi.materials.material import Fluid
-from armi.reactor import assemblyParameters
-from armi.reactor import blocks
-from armi.reactor import composites
-from armi.reactor import grids
+from armi.reactor import assemblyParameters, blocks, composites, grids
 from armi.reactor.flags import Flags
 from armi.reactor.parameters import ParamLocation
 from armi.reactor.spentFuelPool import SpentFuelPool
diff --git a/armi/reactor/blocks.py b/armi/reactor/blocks.py
index 023e86361..aebf3893d 100644
--- a/armi/reactor/blocks.py
+++ b/armi/reactor/blocks.py
@@ -18,35 +18,32 @@
 
 Assemblies are made of blocks. Blocks are made of components.
 """
-from typing import Optional, Type, Tuple, ClassVar
 import collections
 import copy
 import functools
 import math
+from typing import ClassVar, Optional, Tuple, Type
 
 import numpy as np
 
-from armi import nuclideBases
-from armi import runLog
+from armi import nuclideBases, runLog
 from armi.bookkeeping import report
 from armi.nuclearDataIO import xsCollections
-from armi.physics.neutronics import GAMMA
-from armi.physics.neutronics import NEUTRON
-from armi.reactor import blockParameters
-from armi.reactor import components
-from armi.reactor import composites
-from armi.reactor import geometry
-from armi.reactor import grids
-from armi.reactor import parameters
+from armi.physics.neutronics import GAMMA, NEUTRON
+from armi.reactor import (
+    blockParameters,
+    components,
+    composites,
+    geometry,
+    grids,
+    parameters,
+)
 from armi.reactor.components import basicShapes
-from armi.reactor.components.basicShapes import Hexagon, Circle
+from armi.reactor.components.basicShapes import Circle, Hexagon
 from armi.reactor.components.complexShapes import Helix
 from armi.reactor.flags import Flags
 from armi.reactor.parameters import ParamLocation
-from armi.utils import densityTools
-from armi.utils import hexagon
-from armi.utils import iterables
-from armi.utils import units
+from armi.utils import densityTools, hexagon, iterables, units
 from armi.utils.plotting import plotBlockFlux
 from armi.utils.units import TRACE_NUMBER_DENSITY
 
diff --git a/armi/reactor/blueprints/__init__.py b/armi/reactor/blueprints/__init__.py
index 48532ed58..aa31dddde 100644
--- a/armi/reactor/blueprints/__init__.py
+++ b/armi/reactor/blueprints/__init__.py
@@ -69,40 +69,42 @@
 import traceback
 import typing
 
-from ruamel.yaml import CLoader, RoundTripLoader
 import ordered_set
 import yamlize
 import yamlize.objects
+from ruamel.yaml import CLoader, RoundTripLoader
 
-from armi import context
-from armi import getPluginManager, getPluginManagerOrFail
-from armi import migration
-from armi import plugins
-from armi import runLog
+from armi import (
+    context,
+    getPluginManager,
+    getPluginManagerOrFail,
+    migration,
+    plugins,
+    runLog,
+)
 from armi.nucDirectory import nuclideBases
 from armi.physics.neutronics.settings import CONF_LOADING_FILE
-from armi.reactor import assemblies
-from armi.reactor import geometry
-from armi.reactor import systemLayoutInput
+from armi.reactor import assemblies, geometry, systemLayoutInput
 from armi.reactor.blueprints import isotopicOptions
 from armi.reactor.blueprints.assemblyBlueprint import AssemblyKeyedList
 from armi.reactor.blueprints.blockBlueprint import BlockKeyedList
-from armi.reactor.blueprints.componentBlueprint import ComponentGroups
-from armi.reactor.blueprints.componentBlueprint import ComponentKeyedList
+from armi.reactor.blueprints.componentBlueprint import (
+    ComponentGroups,
+    ComponentKeyedList,
+)
 from armi.reactor.blueprints.gridBlueprint import Grids, Triplet
-from armi.reactor.blueprints.reactorBlueprint import Systems, SystemBlueprint
+from armi.reactor.blueprints.reactorBlueprint import SystemBlueprint, Systems
 from armi.reactor.converters import axialExpansionChanger
 from armi.reactor.flags import Flags
 from armi.settings.fwSettings.globalSettings import (
-    CONF_DETAILED_AXIAL_EXPANSION,
+    CONF_ACCEPTABLE_BLOCK_AREA_ERROR,
     CONF_ASSEM_FLAGS_SKIP_AXIAL_EXP,
+    CONF_DETAILED_AXIAL_EXPANSION,
+    CONF_GEOM_FILE,
     CONF_INPUT_HEIGHTS_HOT,
     CONF_NON_UNIFORM_ASSEM_FLAGS,
-    CONF_ACCEPTABLE_BLOCK_AREA_ERROR,
-    CONF_GEOM_FILE,
 )
-from armi.utils import tabulate
-from armi.utils import textProcessors
+from armi.utils import tabulate, textProcessors
 from armi.utils.customExceptions import InputError
 
 context.BLUEPRINTS_IMPORTED = True
diff --git a/armi/reactor/blueprints/assemblyBlueprint.py b/armi/reactor/blueprints/assemblyBlueprint.py
index 6ef7c420f..083c42c8f 100644
--- a/armi/reactor/blueprints/assemblyBlueprint.py
+++ b/armi/reactor/blueprints/assemblyBlueprint.py
@@ -22,11 +22,8 @@
 """
 import yamlize
 
-from armi import getPluginManagerOrFail
-from armi import runLog
-from armi.reactor import assemblies
-from armi.reactor import grids
-from armi.reactor import parameters
+from armi import getPluginManagerOrFail, runLog
+from armi.reactor import assemblies, grids, parameters
 from armi.reactor.blueprints import blockBlueprint
 from armi.reactor.flags import Flags
 from armi.settings.fwSettings.globalSettings import CONF_INPUT_HEIGHTS_HOT
diff --git a/armi/reactor/blueprints/blockBlueprint.py b/armi/reactor/blueprints/blockBlueprint.py
index a1e7a5543..fe358c561 100644
--- a/armi/reactor/blueprints/blockBlueprint.py
+++ b/armi/reactor/blueprints/blockBlueprint.py
@@ -15,14 +15,13 @@
 """This module defines the ARMI input for a block definition, and code for constructing an ARMI ``Block``."""
 import collections
 from inspect import signature
-from typing import Iterable, Set, Iterator
+from typing import Iterable, Iterator, Set
 
 import yamlize
 
 from armi import getPluginManagerOrFail, runLog
 from armi.materials.material import Material
-from armi.reactor import blocks
-from armi.reactor import parameters
+from armi.reactor import blocks, parameters
 from armi.reactor.blueprints import componentBlueprint
 from armi.reactor.components.component import Component
 from armi.reactor.composites import Composite
diff --git a/armi/reactor/blueprints/componentBlueprint.py b/armi/reactor/blueprints/componentBlueprint.py
index 289a0de8f..c871d8ca5 100644
--- a/armi/reactor/blueprints/componentBlueprint.py
+++ b/armi/reactor/blueprints/componentBlueprint.py
@@ -20,13 +20,11 @@
 """
 import yamlize
 
-from armi import runLog
-from armi import materials
-from armi.reactor import components
-from armi.reactor import composites
+from armi import materials, runLog
+from armi.nucDirectory import nuclideBases
+from armi.reactor import components, composites
 from armi.reactor.flags import Flags
 from armi.utils import densityTools
-from armi.nucDirectory import nuclideBases
 
 COMPONENT_GROUP_SHAPE = "group"
 
diff --git a/armi/reactor/blueprints/gridBlueprint.py b/armi/reactor/blueprints/gridBlueprint.py
index 2c1341fdd..c05a8ed7b 100644
--- a/armi/reactor/blueprints/gridBlueprint.py
+++ b/armi/reactor/blueprints/gridBlueprint.py
@@ -100,18 +100,17 @@
                          IC   IC   MC   PC   RR   SH
 
 """
-from io import StringIO
-from typing import Tuple
 import copy
 import itertools
+from io import StringIO
+from typing import Tuple
 
 import numpy as np
 import yamlize
 from ruamel.yaml import scalarstring
 
 from armi import runLog
-from armi.reactor import blueprints
-from armi.reactor import geometry, grids
+from armi.reactor import blueprints, geometry, grids
 from armi.utils import asciimaps
 from armi.utils.customExceptions import InputError
 from armi.utils.mathematics import isMonotonic
diff --git a/armi/reactor/blueprints/isotopicOptions.py b/armi/reactor/blueprints/isotopicOptions.py
index e8b2b3544..f2e92866b 100644
--- a/armi/reactor/blueprints/isotopicOptions.py
+++ b/armi/reactor/blueprints/isotopicOptions.py
@@ -20,23 +20,19 @@
 """
 import yamlize
 
-from armi import materials
-from armi import runLog
-from armi.nucDirectory import elements
-from armi.nucDirectory import nucDir
-from armi.nucDirectory import nuclideBases
-from armi.utils import densityTools
-from armi.utils import units
-from armi.utils.customExceptions import InputError
+from armi import materials, runLog
+from armi.nucDirectory import elements, nucDir, nuclideBases
 from armi.physics.neutronics.fissionProductModel.fissionProductModelSettings import (
-    CONF_FP_MODEL,
     CONF_FISSION_PRODUCT_LIBRARY_NAME,
+    CONF_FP_MODEL,
 )
 from armi.physics.neutronics.settings import (
     CONF_MCNP_LIB_BASE,
     CONF_NEUTRONICS_KERNEL,
     CONF_XS_KERNEL,
 )
+from armi.utils import densityTools, units
+from armi.utils.customExceptions import InputError
 
 ALLOWED_KEYS = set(nuclideBases.byName.keys()) | set(elements.bySymbol.keys())
 
diff --git a/armi/reactor/blueprints/reactorBlueprint.py b/armi/reactor/blueprints/reactorBlueprint.py
index 75b363a64..ff7a4e8fb 100644
--- a/armi/reactor/blueprints/reactorBlueprint.py
+++ b/armi/reactor/blueprints/reactorBlueprint.py
@@ -35,11 +35,8 @@
 """
 import yamlize
 
-from armi import context
-from armi import getPluginManagerOrFail
-from armi import runLog
-from armi.reactor import geometry
-from armi.reactor import grids
+from armi import context, getPluginManagerOrFail, runLog
+from armi.reactor import geometry, grids
 from armi.reactor.blueprints.gridBlueprint import Triplet
 from armi.utils import tabulate
 
@@ -236,7 +233,7 @@ def _modifyGeometry(self, container, gridDesign):
         # all cases should have no edge assemblies. They are added ephemerally when needed
         from armi.reactor.converters import (
             geometryConverters,
-        )  # preventing circular imports
+        )
 
         runLog.header("=========== Applying Geometry Modifications ===========")
         converter = geometryConverters.EdgeAssemblyChanger()
diff --git a/armi/reactor/blueprints/tests/test_blueprints.py b/armi/reactor/blueprints/tests/test_blueprints.py
index 7827dd5e1..95811561c 100644
--- a/armi/reactor/blueprints/tests/test_blueprints.py
+++ b/armi/reactor/blueprints/tests/test_blueprints.py
@@ -23,16 +23,14 @@
 from armi import settings
 from armi.nucDirectory.elements import bySymbol
 from armi.physics.neutronics.settings import CONF_XS_KERNEL
-from armi.reactor import blueprints
-from armi.reactor import parameters
+from armi.reactor import blueprints, parameters
 from armi.reactor.blueprints.componentBlueprint import ComponentBlueprint
-from armi.reactor.blueprints.isotopicOptions import NuclideFlags, CustomIsotopics
-from armi.reactor.flags import Flags
-from armi.tests import TEST_ROOT
-from armi.utils import directoryChangers
-from armi.utils import textProcessors
 from armi.reactor.blueprints.gridBlueprint import saveToStream
+from armi.reactor.blueprints.isotopicOptions import CustomIsotopics, NuclideFlags
+from armi.reactor.flags import Flags
 from armi.settings.fwSettings.globalSettings import CONF_INPUT_HEIGHTS_HOT
+from armi.tests import TEST_ROOT
+from armi.utils import directoryChangers, textProcessors
 
 
 class TestBlueprints(unittest.TestCase):
diff --git a/armi/reactor/blueprints/tests/test_customIsotopics.py b/armi/reactor/blueprints/tests/test_customIsotopics.py
index d971cb658..27ce95edc 100644
--- a/armi/reactor/blueprints/tests/test_customIsotopics.py
+++ b/armi/reactor/blueprints/tests/test_customIsotopics.py
@@ -18,11 +18,12 @@
 
 import yamlize
 
-from armi import runLog
-from armi import settings
-from armi.physics.neutronics.settings import CONF_MCNP_LIB_BASE
-from armi.physics.neutronics.settings import CONF_NEUTRONICS_KERNEL
-from armi.physics.neutronics.settings import CONF_XS_KERNEL
+from armi import runLog, settings
+from armi.physics.neutronics.settings import (
+    CONF_MCNP_LIB_BASE,
+    CONF_NEUTRONICS_KERNEL,
+    CONF_XS_KERNEL,
+)
 from armi.reactor import blueprints
 from armi.reactor.blueprints import isotopicOptions
 from armi.reactor.flags import Flags
diff --git a/armi/reactor/blueprints/tests/test_gridBlueprints.py b/armi/reactor/blueprints/tests/test_gridBlueprints.py
index 076a68186..16e38cd50 100644
--- a/armi/reactor/blueprints/tests/test_gridBlueprints.py
+++ b/armi/reactor/blueprints/tests/test_gridBlueprints.py
@@ -25,7 +25,6 @@
 from armi.reactor.blueprints.gridBlueprint import Grids, saveToStream
 from armi.utils.directoryChangers import TemporaryDirectoryChanger
 
-
 LATTICE_BLUEPRINT = """
 control:
     geom: hex_corners_up
diff --git a/armi/reactor/blueprints/tests/test_materialModifications.py b/armi/reactor/blueprints/tests/test_materialModifications.py
index a6487f903..52ada251e 100644
--- a/armi/reactor/blueprints/tests/test_materialModifications.py
+++ b/armi/reactor/blueprints/tests/test_materialModifications.py
@@ -16,8 +16,7 @@
 
 from numpy.testing import assert_allclose
 
-from armi import materials
-from armi import settings
+from armi import materials, settings
 from armi.reactor import blueprints
 from armi.reactor.blueprints.blockBlueprint import BlockBlueprint
 
diff --git a/armi/reactor/blueprints/tests/test_reactorBlueprints.py b/armi/reactor/blueprints/tests/test_reactorBlueprints.py
index 411d6fcfa..2e107517e 100644
--- a/armi/reactor/blueprints/tests/test_reactorBlueprints.py
+++ b/armi/reactor/blueprints/tests/test_reactorBlueprints.py
@@ -17,10 +17,8 @@
 import unittest
 
 from armi import settings
-from armi.reactor import blueprints
-from armi.reactor import reactors
-from armi.reactor.blueprints import gridBlueprint
-from armi.reactor.blueprints import reactorBlueprint
+from armi.reactor import blueprints, reactors
+from armi.reactor.blueprints import gridBlueprint, reactorBlueprint
 from armi.reactor.blueprints.tests import test_customIsotopics
 from armi.reactor.composites import Composite
 from armi.reactor.excoreStructure import ExcoreStructure
diff --git a/armi/reactor/components/__init__.py b/armi/reactor/components/__init__.py
index 516cdae81..953d12d22 100644
--- a/armi/reactor/components/__init__.py
+++ b/armi/reactor/components/__init__.py
@@ -26,7 +26,7 @@
 
     Class inheritance diagram for :py:mod:`armi.reactor.components`.
 """
-# ruff: noqa: F405
+# ruff: noqa: F405, I001
 import math
 
 import numpy as np
diff --git a/armi/reactor/components/basicShapes.py b/armi/reactor/components/basicShapes.py
index 4e395009b..2edc20a9a 100644
--- a/armi/reactor/components/basicShapes.py
+++ b/armi/reactor/components/basicShapes.py
@@ -20,8 +20,7 @@
 """
 import math
 
-from armi.reactor.components import ShapedComponent
-from armi.reactor.components import componentParameters
+from armi.reactor.components import ShapedComponent, componentParameters
 
 
 class Circle(ShapedComponent):
diff --git a/armi/reactor/components/complexShapes.py b/armi/reactor/components/complexShapes.py
index 2f1ff9f6f..247447ab7 100644
--- a/armi/reactor/components/complexShapes.py
+++ b/armi/reactor/components/complexShapes.py
@@ -16,9 +16,7 @@
 
 import math
 
-from armi.reactor.components import ShapedComponent
-from armi.reactor.components import componentParameters
-from armi.reactor.components import basicShapes
+from armi.reactor.components import ShapedComponent, basicShapes, componentParameters
 
 
 class HoledHexagon(basicShapes.Hexagon):
diff --git a/armi/reactor/components/component.py b/armi/reactor/components/component.py
index 5a4da2f3b..979d6471d 100644
--- a/armi/reactor/components/component.py
+++ b/armi/reactor/components/component.py
@@ -19,21 +19,15 @@
 """
 import copy
 import re
+from typing import Optional
 
 import numpy as np
-from typing import Optional
 
-from armi import materials
-from armi import runLog
+from armi import materials, runLog
 from armi.bookkeeping import report
-from armi.materials import custom
-from armi.materials import material
-from armi.materials import void
+from armi.materials import custom, material, void
 from armi.nucDirectory import nuclideBases
-from armi.reactor import composites
-from armi.reactor import flags
-from armi.reactor import grids
-from armi.reactor import parameters
+from armi.reactor import composites, flags, grids, parameters
 from armi.reactor.components import componentParameters
 from armi.utils import densityTools
 from armi.utils.units import C_TO_K
diff --git a/armi/reactor/components/volumetricShapes.py b/armi/reactor/components/volumetricShapes.py
index 329c537b1..27d2bee51 100644
--- a/armi/reactor/components/volumetricShapes.py
+++ b/armi/reactor/components/volumetricShapes.py
@@ -16,8 +16,7 @@
 
 import math
 
-from armi.reactor.components import componentParameters
-from armi.reactor.components import ShapedComponent
+from armi.reactor.components import ShapedComponent, componentParameters
 
 
 class Sphere(ShapedComponent):
diff --git a/armi/reactor/composites.py b/armi/reactor/composites.py
index 1b2bad687..e6cd581c6 100644
--- a/armi/reactor/composites.py
+++ b/armi/reactor/composites.py
@@ -46,9 +46,7 @@
 from armi.reactor import grids, parameters
 from armi.reactor.flags import Flags, TypeSpec
 from armi.reactor.parameters import resolveCollections
-from armi.utils import densityTools
-from armi.utils import tabulate
-from armi.utils import units
+from armi.utils import densityTools, tabulate, units
 from armi.utils.densityTools import calculateNumberDensity
 from armi.utils.flags import auto
 
diff --git a/armi/reactor/converters/axialExpansionChanger/__init__.py b/armi/reactor/converters/axialExpansionChanger/__init__.py
index 9676af29d..eb7454eac 100644
--- a/armi/reactor/converters/axialExpansionChanger/__init__.py
+++ b/armi/reactor/converters/axialExpansionChanger/__init__.py
@@ -19,12 +19,10 @@
 )
 from armi.reactor.converters.axialExpansionChanger.axialExpansionChanger import (
     AxialExpansionChanger,
-)
-from armi.reactor.converters.axialExpansionChanger.axialExpansionChanger import (
     makeAssemsAbleToSnapToUniformMesh,
 )
-from armi.reactor.converters.axialExpansionChanger.expansionData import ExpansionData
 from armi.reactor.converters.axialExpansionChanger.expansionData import (
+    ExpansionData,
     getSolidComponents,
     iterSolidComponents,
 )
diff --git a/armi/reactor/converters/axialExpansionChanger/assemblyAxialLinkage.py b/armi/reactor/converters/axialExpansionChanger/assemblyAxialLinkage.py
index ae546b51e..c41977d63 100644
--- a/armi/reactor/converters/axialExpansionChanger/assemblyAxialLinkage.py
+++ b/armi/reactor/converters/axialExpansionChanger/assemblyAxialLinkage.py
@@ -12,10 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import typing
 import dataclasses
 import functools
 import itertools
+import typing
 
 from armi import runLog
 from armi.reactor.blocks import Block
@@ -24,7 +24,6 @@
     iterSolidComponents,
 )
 
-
 if typing.TYPE_CHECKING:
     from armi.reactor.assemblies import Assembly
 
diff --git a/armi/reactor/converters/axialExpansionChanger/expansionData.py b/armi/reactor/converters/axialExpansionChanger/expansionData.py
index 39d4dacaa..b3aa73aed 100644
--- a/armi/reactor/converters/axialExpansionChanger/expansionData.py
+++ b/armi/reactor/converters/axialExpansionChanger/expansionData.py
@@ -14,7 +14,7 @@
 """Data container for axial expansion."""
 
 from statistics import mean
-from typing import TYPE_CHECKING, Optional, Iterable
+from typing import TYPE_CHECKING, Iterable, Optional
 
 from armi import runLog
 from armi.materials import material
@@ -29,9 +29,9 @@
 ]
 
 if TYPE_CHECKING:
-    from armi.reactor.components import Component
-    from armi.reactor.blocks import Block
     from armi.reactor.assemblies import Assembly
+    from armi.reactor.blocks import Block
+    from armi.reactor.components import Component
 
 
 def iterSolidComponents(b: "Block") -> Iterable["Component"]:
diff --git a/armi/reactor/converters/geometryConverters.py b/armi/reactor/converters/geometryConverters.py
index e035c4e9a..8006a917f 100644
--- a/armi/reactor/converters/geometryConverters.py
+++ b/armi/reactor/converters/geometryConverters.py
@@ -35,26 +35,26 @@
 import matplotlib.pyplot as plt
 import numpy as np
 
-from armi import materials
-from armi import runLog
+from armi import materials, runLog
 from armi.physics.neutronics.fissionProductModel import lumpedFissionProduct
-from armi.reactor import assemblies
-from armi.reactor import blocks
-from armi.reactor import components
-from armi.reactor import geometry
-from armi.reactor import grids
-from armi.reactor import parameters
-from armi.reactor import reactors
-from armi.reactor.converters import blockConverters
-from armi.reactor.converters import meshConverters
+from armi.reactor import (
+    assemblies,
+    blocks,
+    components,
+    geometry,
+    grids,
+    parameters,
+    reactors,
+)
+from armi.reactor.converters import blockConverters, meshConverters
 from armi.reactor.flags import Flags
-from armi.reactor.parameters import Category
-from armi.reactor.parameters import NEVER
-from armi.reactor.parameters import ParamLocation
-from armi.reactor.parameters import SINCE_LAST_GEOMETRY_TRANSFORMATION
-from armi.utils import hexagon
-from armi.utils import plotting
-from armi.utils import units
+from armi.reactor.parameters import (
+    NEVER,
+    SINCE_LAST_GEOMETRY_TRANSFORMATION,
+    Category,
+    ParamLocation,
+)
+from armi.utils import hexagon, plotting, units
 
 BLOCK_AXIAL_MESH_SPACING = (
     20  # Block axial mesh spacing set for nodal diffusion calculation (cm)
diff --git a/armi/reactor/converters/meshConverters.py b/armi/reactor/converters/meshConverters.py
index 769770e63..ef89eedaa 100644
--- a/armi/reactor/converters/meshConverters.py
+++ b/armi/reactor/converters/meshConverters.py
@@ -15,8 +15,8 @@
 """Mesh specifiers update the mesh structure of a reactor by increasing or decreasing the number of mesh coordinates."""
 
 import collections
-import math
 import itertools
+import math
 
 import numpy as np
 
diff --git a/armi/reactor/converters/parameterSweeps/generalParameterSweepConverters.py b/armi/reactor/converters/parameterSweeps/generalParameterSweepConverters.py
index 11248e3b8..a5d6a0bc0 100644
--- a/armi/reactor/converters/parameterSweeps/generalParameterSweepConverters.py
+++ b/armi/reactor/converters/parameterSweeps/generalParameterSweepConverters.py
@@ -13,12 +13,12 @@
 # limitations under the License.
 
 """Module for general core parameter sweeps."""
-from armi.reactor.converters.geometryConverters import GeometryConverter
 from armi.physics.neutronics.settings import (
     CONF_EPS_EIG,
     CONF_EPS_FSAVG,
     CONF_EPS_FSPOINT,
 )
+from armi.reactor.converters.geometryConverters import GeometryConverter
 
 
 class ParameterSweepConverter(GeometryConverter):
diff --git a/armi/reactor/converters/parameterSweeps/tests/test_paramSweepConverters.py b/armi/reactor/converters/parameterSweeps/tests/test_paramSweepConverters.py
index 8222ec533..af7d0dd6f 100644
--- a/armi/reactor/converters/parameterSweeps/tests/test_paramSweepConverters.py
+++ b/armi/reactor/converters/parameterSweeps/tests/test_paramSweepConverters.py
@@ -25,7 +25,6 @@
 from armi.testing import loadTestReactor
 from armi.tests import TEST_ROOT
 
-
 THIS_DIR = os.path.dirname(__file__)
 
 
diff --git a/armi/reactor/converters/pinTypeBlockConverters.py b/armi/reactor/converters/pinTypeBlockConverters.py
index 59864ae35..ab36abbfe 100644
--- a/armi/reactor/converters/pinTypeBlockConverters.py
+++ b/armi/reactor/converters/pinTypeBlockConverters.py
@@ -28,8 +28,8 @@
 """
 import math
 
-from armi.reactor.flags import Flags
 from armi import runLog
+from armi.reactor.flags import Flags
 
 
 def adjustSmearDensity(obj, value, bolBlock=None):
diff --git a/armi/reactor/converters/tests/test_blockConverter.py b/armi/reactor/converters/tests/test_blockConverter.py
index c2ada65cf..702b8eb38 100644
--- a/armi/reactor/converters/tests/test_blockConverter.py
+++ b/armi/reactor/converters/tests/test_blockConverter.py
@@ -13,10 +13,10 @@
 # limitations under the License.
 
 """Test block conversions."""
+import math
 import os
 import unittest
 
-import math
 import numpy as np
 
 from armi.physics.neutronics.isotopicDepletion.isotopicDepletionInterface import (
diff --git a/armi/reactor/converters/tests/test_geometryConverters.py b/armi/reactor/converters/tests/test_geometryConverters.py
index 5a9c18dde..5746a18bb 100644
--- a/armi/reactor/converters/tests/test_geometryConverters.py
+++ b/armi/reactor/converters/tests/test_geometryConverters.py
@@ -16,20 +16,17 @@
 import math
 import os
 import unittest
+
 from numpy.testing import assert_allclose
 
 from armi import runLog
-from armi.reactor import blocks
-from armi.reactor import geometry
-from armi.reactor import grids
-from armi.reactor.converters import geometryConverters
-from armi.reactor.converters import uniformMesh
+from armi.reactor import blocks, geometry, grids
+from armi.reactor.converters import geometryConverters, uniformMesh
 from armi.reactor.flags import Flags
 from armi.testing import loadTestReactor, reduceTestReactorRings
 from armi.tests import TEST_ROOT, mockRunLogs
 from armi.utils import directoryChangers
 
-
 THIS_DIR = os.path.dirname(__file__)
 
 
diff --git a/armi/reactor/converters/tests/test_meshConverters.py b/armi/reactor/converters/tests/test_meshConverters.py
index e3630fc28..14f102139 100644
--- a/armi/reactor/converters/tests/test_meshConverters.py
+++ b/armi/reactor/converters/tests/test_meshConverters.py
@@ -16,7 +16,7 @@
 import math
 import unittest
 
-from armi.reactor.converters import meshConverters, geometryConverters
+from armi.reactor.converters import geometryConverters, meshConverters
 from armi.testing import loadTestReactor
 from armi.tests import TEST_ROOT
 
diff --git a/armi/reactor/converters/tests/test_pinTypeBlockConverters.py b/armi/reactor/converters/tests/test_pinTypeBlockConverters.py
index 2574aa969..4760d9f7b 100644
--- a/armi/reactor/converters/tests/test_pinTypeBlockConverters.py
+++ b/armi/reactor/converters/tests/test_pinTypeBlockConverters.py
@@ -15,14 +15,13 @@
 import copy
 import unittest
 
-from armi.reactor.flags import Flags
-
-from armi.reactor.tests.test_blocks import loadTestBlock, buildSimpleFuelBlock
 from armi.reactor.converters.pinTypeBlockConverters import (
-    adjustCladThicknessByOD,
     adjustCladThicknessByID,
+    adjustCladThicknessByOD,
     adjustSmearDensity,
 )
+from armi.reactor.flags import Flags
+from armi.reactor.tests.test_blocks import buildSimpleFuelBlock, loadTestBlock
 
 
 class TestPinTypeConverters(unittest.TestCase):
diff --git a/armi/reactor/converters/tests/test_uniformMesh.py b/armi/reactor/converters/tests/test_uniformMesh.py
index 1f4f404da..d5d386f56 100644
--- a/armi/reactor/converters/tests/test_uniformMesh.py
+++ b/armi/reactor/converters/tests/test_uniformMesh.py
@@ -13,20 +13,19 @@
 # limitations under the License.
 """Tests for the uniform mesh geometry converter."""
 import collections
+import copy
 import os
 import random
 import unittest
-import copy
 
 from armi.nuclearDataIO.cccc import isotxs
 from armi.physics.neutronics.settings import CONF_XS_KERNEL
-from armi.settings.fwSettings.globalSettings import CONF_UNIFORM_MESH_MINIMUM_SIZE
 from armi.reactor.converters import uniformMesh
 from armi.reactor.flags import Flags
-from armi.reactor.tests import test_assemblies
-from armi.reactor.tests import test_blocks
+from armi.reactor.tests import test_assemblies, test_blocks
+from armi.settings.fwSettings.globalSettings import CONF_UNIFORM_MESH_MINIMUM_SIZE
 from armi.testing import loadTestReactor, reduceTestReactorRings
-from armi.tests import TEST_ROOT, ISOAA_PATH
+from armi.tests import ISOAA_PATH, TEST_ROOT
 
 
 class DummyFluxOptions:
diff --git a/armi/reactor/converters/uniformMesh.py b/armi/reactor/converters/uniformMesh.py
index 8bb949771..af7fcda70 100644
--- a/armi/reactor/converters/uniformMesh.py
+++ b/armi/reactor/converters/uniformMesh.py
@@ -52,28 +52,24 @@
 .. figure:: /.static/axial_homogenization.png
 
 """
-import re
-import glob
-import copy
 import collections
+import copy
+import glob
+import re
 from timeit import default_timer as timer
 
 import numpy as np
 
 import armi
 from armi import runLog
-from armi.utils.mathematics import average1DWithinTolerance
-from armi.utils import iterables
-from armi.utils import plotting
-from armi.reactor import grids
-from armi.reactor.reactors import Core
-from armi.reactor.flags import Flags
+from armi.physics.neutronics.globalFlux import RX_ABS_MICRO_LABELS, RX_PARAM_NAMES
+from armi.reactor import grids, parameters
 from armi.reactor.converters.geometryConverters import GeometryConverter
-from armi.reactor import parameters
-from armi.reactor.reactors import Reactor
+from armi.reactor.flags import Flags
+from armi.reactor.reactors import Core, Reactor
 from armi.settings.fwSettings.globalSettings import CONF_UNIFORM_MESH_MINIMUM_SIZE
-from armi.physics.neutronics.globalFlux import RX_PARAM_NAMES, RX_ABS_MICRO_LABELS
-
+from armi.utils import iterables, plotting
+from armi.utils.mathematics import average1DWithinTolerance
 
 HEAVY_METAL_PARAMS = ["molesHmBOL", "massHmBOL"]
 
diff --git a/armi/reactor/cores.py b/armi/reactor/cores.py
index 00ce8d47d..830a8fd5a 100644
--- a/armi/reactor/cores.py
+++ b/armi/reactor/cores.py
@@ -18,24 +18,25 @@
 A Core frequently contain assemblies which in turn contain more refinement in representing the
 physical reactor.
 """
-from typing import Optional
 import collections
 import copy
 import itertools
 import os
 import time
+from typing import Optional
 
 import numpy as np
 
-from armi import getPluginManagerOrFail, nuclearDataIO
-from armi import runLog
+from armi import getPluginManagerOrFail, nuclearDataIO, runLog
 from armi.nuclearDataIO import xsLibraries
-from armi.reactor import composites
-from armi.reactor import geometry
-from armi.reactor import grids
-from armi.reactor import parameters
-from armi.reactor import reactorParameters
-from armi.reactor import zones
+from armi.reactor import (
+    composites,
+    geometry,
+    grids,
+    parameters,
+    reactorParameters,
+    zones,
+)
 from armi.reactor.flags import Flags
 from armi.settings.fwSettings.globalSettings import (
     CONF_AUTOMATIC_VARIABLE_MESH,
@@ -48,8 +49,7 @@
     CONF_TRACK_ASSEMS,
     CONF_ZONE_DEFINITIONS,
 )
-from armi.utils import createFormattedStrWithDelimiter, units
-from armi.utils import tabulate
+from armi.utils import createFormattedStrWithDelimiter, tabulate, units
 from armi.utils.iterables import Sequence
 from armi.utils.mathematics import average1DWithinTolerance
 
@@ -124,8 +124,8 @@ def __init__(self, name):
 
     def setOptionsFromCs(self, cs):
         from armi.physics.fuelCycle.settings import (
-            CONF_JUMP_RING_NUM,
             CONF_CIRCULAR_RING_MODE,
+            CONF_JUMP_RING_NUM,
         )
 
         # these are really "user modifiable modeling constants"
diff --git a/armi/reactor/flags.py b/armi/reactor/flags.py
index 190d58c7a..e311f6e4a 100644
--- a/armi/reactor/flags.py
+++ b/armi/reactor/flags.py
@@ -110,7 +110,6 @@
 
 from armi.utils.flags import Flag, FlagType, auto
 
-
 # Type alias used for passing type specifications to many of the composite methods. See
 # Composite::hasFlags() to understand the semantics for how TypeSpecs are interpreted.
 # Anything that interprets a TypeSpec should apply the same semantics.
diff --git a/armi/reactor/geometry.py b/armi/reactor/geometry.py
index 93a9d9fc5..7d1e3601e 100644
--- a/armi/reactor/geometry.py
+++ b/armi/reactor/geometry.py
@@ -17,7 +17,7 @@
 geometry.
 """
 import enum
-from typing import Union, Optional
+from typing import Optional, Union
 
 
 class GeomType(enum.Enum):
diff --git a/armi/reactor/grids/__init__.py b/armi/reactor/grids/__init__.py
index fa6fe3c07..541e1cd15 100644
--- a/armi/reactor/grids/__init__.py
+++ b/armi/reactor/grids/__init__.py
@@ -61,29 +61,27 @@
 current grid.
 """
 # ruff: noqa: F401
-from typing import Tuple, Optional
+from typing import Optional, Tuple
 
+from armi.reactor.grids.axial import AxialGrid
+from armi.reactor.grids.cartesian import CartesianGrid
 from armi.reactor.grids.constants import (
-    BOUNDARY_CENTER,
     BOUNDARY_0_DEGREES,
-    BOUNDARY_120_DEGREES,
     BOUNDARY_60_DEGREES,
+    BOUNDARY_120_DEGREES,
+    BOUNDARY_CENTER,
 )
-
+from armi.reactor.grids.grid import Grid
+from armi.reactor.grids.hexagonal import COS30, SIN30, TRIANGLES_IN_HEXAGON, HexGrid
 from armi.reactor.grids.locations import (
-    LocationBase,
+    CoordinateLocation,
     IndexLocation,
+    LocationBase,
     MultiIndexLocation,
-    CoordinateLocation,
     addingIsValid,
 )
-
-from armi.reactor.grids.grid import Grid
-from armi.reactor.grids.structuredGrid import StructuredGrid, GridParameters, _tuplify
-from armi.reactor.grids.axial import AxialGrid
-from armi.reactor.grids.cartesian import CartesianGrid
-from armi.reactor.grids.hexagonal import HexGrid, COS30, SIN30, TRIANGLES_IN_HEXAGON
-from armi.reactor.grids.thetarz import ThetaRZGrid, TAU
+from armi.reactor.grids.structuredGrid import GridParameters, StructuredGrid, _tuplify
+from armi.reactor.grids.thetarz import TAU, ThetaRZGrid
 
 
 def locatorLabelToIndices(label: str) -> Tuple[int, int, Optional[int]]:
diff --git a/armi/reactor/grids/axial.py b/armi/reactor/grids/axial.py
index 4cde443f1..ffbb43a4a 100644
--- a/armi/reactor/grids/axial.py
+++ b/armi/reactor/grids/axial.py
@@ -11,7 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-from typing import List, Optional, TYPE_CHECKING, NoReturn
+from typing import TYPE_CHECKING, List, NoReturn, Optional
 
 import numpy as np
 
diff --git a/armi/reactor/grids/cartesian.py b/armi/reactor/grids/cartesian.py
index 4971e8ee0..adb83c08e 100644
--- a/armi/reactor/grids/cartesian.py
+++ b/armi/reactor/grids/cartesian.py
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import itertools
-from typing import Optional, NoReturn, Tuple
+from typing import NoReturn, Optional, Tuple
 
 import numpy as np
 
diff --git a/armi/reactor/grids/grid.py b/armi/reactor/grids/grid.py
index fac584260..14ab823c2 100644
--- a/armi/reactor/grids/grid.py
+++ b/armi/reactor/grids/grid.py
@@ -12,12 +12,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 from abc import ABC, abstractmethod
-from typing import Union, Optional, Hashable, TYPE_CHECKING, Dict, Iterable, Tuple, List
+from typing import TYPE_CHECKING, Dict, Hashable, Iterable, List, Optional, Tuple, Union
 
 import numpy as np
 
 from armi.reactor import geometry
-from armi.reactor.grids.locations import LocationBase, IndexLocation, IJType, IJKType
+from armi.reactor.grids.locations import IJKType, IJType, IndexLocation, LocationBase
 
 if TYPE_CHECKING:
     from armi.reactor.composites import ArmiObject
diff --git a/armi/reactor/grids/hexagonal.py b/armi/reactor/grids/hexagonal.py
index df44d19ef..262307826 100644
--- a/armi/reactor/grids/hexagonal.py
+++ b/armi/reactor/grids/hexagonal.py
@@ -13,15 +13,15 @@
 # limitations under the License.
 from collections import deque
 from math import sqrt
-from typing import Tuple, List, Optional
+from typing import List, Optional, Tuple
 
 import numpy as np
 
 from armi.reactor import geometry
 from armi.reactor.grids.constants import (
     BOUNDARY_0_DEGREES,
-    BOUNDARY_120_DEGREES,
     BOUNDARY_60_DEGREES,
+    BOUNDARY_120_DEGREES,
     BOUNDARY_CENTER,
 )
 from armi.reactor.grids.locations import IJKType, IJType, IndexLocation
diff --git a/armi/reactor/grids/locations.py b/armi/reactor/grids/locations.py
index 1d0320ee2..cc2a1aaf7 100644
--- a/armi/reactor/grids/locations.py
+++ b/armi/reactor/grids/locations.py
@@ -12,9 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from typing import Optional, TYPE_CHECKING, Union, Hashable, Tuple, List, Iterator
-from abc import ABC, abstractmethod
 import math
+from abc import ABC, abstractmethod
+from typing import TYPE_CHECKING, Hashable, Iterator, List, Optional, Tuple, Union
 
 import numpy as np
 
diff --git a/armi/reactor/grids/structuredGrid.py b/armi/reactor/grids/structuredGrid.py
index 07388338b..177120419 100644
--- a/armi/reactor/grids/structuredGrid.py
+++ b/armi/reactor/grids/structuredGrid.py
@@ -10,10 +10,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from abc import abstractmethod
 import collections
 import itertools
-from typing import Tuple, Union, List, Iterable, Optional, Sequence
+from abc import abstractmethod
+from typing import Iterable, List, Optional, Sequence, Tuple, Union
 
 import numpy as np
 
diff --git a/armi/reactor/grids/tests/test_grids.py b/armi/reactor/grids/tests/test_grids.py
index 79502922d..8cfa5c492 100644
--- a/armi/reactor/grids/tests/test_grids.py
+++ b/armi/reactor/grids/tests/test_grids.py
@@ -13,17 +13,16 @@
 # limitations under the License.
 
 """Tests for grids."""
-from io import BytesIO
-from random import randint
 import math
 import pickle
 import unittest
+from io import BytesIO
+from random import randint
 
 import numpy as np
 from numpy.testing import assert_allclose, assert_array_equal
 
-from armi.reactor import geometry
-from armi.reactor import grids
+from armi.reactor import geometry, grids
 from armi.utils import hexagon
 
 
diff --git a/armi/reactor/grids/thetarz.py b/armi/reactor/grids/thetarz.py
index 7f9582d4c..c3270c009 100644
--- a/armi/reactor/grids/thetarz.py
+++ b/armi/reactor/grids/thetarz.py
@@ -12,11 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import math
-from typing import TYPE_CHECKING, Optional, NoReturn
+from typing import TYPE_CHECKING, NoReturn, Optional
 
 import numpy as np
 
-from armi.reactor.grids.locations import IJType, IJKType
+from armi.reactor.grids.locations import IJKType, IJType
 from armi.reactor.grids.structuredGrid import StructuredGrid
 
 if TYPE_CHECKING:
diff --git a/armi/reactor/parameters/__init__.py b/armi/reactor/parameters/__init__.py
index 16bf2813b..62716923b 100644
--- a/armi/reactor/parameters/__init__.py
+++ b/armi/reactor/parameters/__init__.py
@@ -197,37 +197,32 @@ class instance to have a ``__dict__``. This saves memory when there are many
 .. _Meriam-Webster: http://www.merriam-webster.com/dictionary/parameter
 """
 # ruff: noqa: F401
+from armi.reactor.parameters.exceptions import (
+    ParameterDefinitionError,
+    ParameterError,
+    UnknownParameterError,
+)
 from armi.reactor.parameters.parameterCollections import (
     ParameterCollection,
+    applyAllParameters,
     collectPluginParameters,
 )
-from armi.reactor.parameters.parameterCollections import applyAllParameters
-from armi.reactor.parameters.parameterDefinitions import (
-    ParameterDefinitionCollection,
-    Parameter,
-)
-
 from armi.reactor.parameters.parameterDefinitions import (
+    ALL_DEFINITIONS,
+    NEVER,
+    SINCE_ANYTHING,
+    SINCE_BACKUP,
     SINCE_INITIALIZATION,
     SINCE_LAST_DISTRIBUTE_STATE,
     SINCE_LAST_GEOMETRY_TRANSFORMATION,
-    SINCE_BACKUP,
-    SINCE_ANYTHING,
-    NEVER,
-    Serializer,
     Category,
-    ParamLocation,
     NoDefault,
-    ALL_DEFINITIONS,
-)
-
-from armi.reactor.parameters.exceptions import (
-    ParameterDefinitionError,
-    ParameterError,
-    UnknownParameterError,
+    Parameter,
+    ParameterDefinitionCollection,
+    ParamLocation,
+    Serializer,
 )
 
-
 forType = ALL_DEFINITIONS.forType
 inCategory = ALL_DEFINITIONS.inCategory
 byNameAndType = ALL_DEFINITIONS.byNameAndType
diff --git a/armi/reactor/parameters/parameterCollections.py b/armi/reactor/parameters/parameterCollections.py
index c588563cc..65f3c34fc 100644
--- a/armi/reactor/parameters/parameterCollections.py
+++ b/armi/reactor/parameters/parameterCollections.py
@@ -12,24 +12,23 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from typing import Any, Optional, List, Set, Iterator, Callable
 import copy
 import pickle
 import sys
+from typing import Any, Callable, Iterator, List, Optional, Set
 
 import numpy as np
 
 from armi import runLog
-from armi.reactor.parameters import parameterDefinitions, exceptions
+from armi.reactor.parameters import exceptions, parameterDefinitions
 from armi.reactor.parameters.parameterDefinitions import (
-    SINCE_LAST_DISTRIBUTE_STATE,
-    SINCE_BACKUP,
-    SINCE_ANYTHING,
     NEVER,
+    SINCE_ANYTHING,
+    SINCE_BACKUP,
+    SINCE_LAST_DISTRIBUTE_STATE,
 )
 from armi.utils import units
 
-
 GLOBAL_SERIAL_NUM = -1
 """
 The serial number for all ParameterCollections
diff --git a/armi/reactor/parameters/parameterDefinitions.py b/armi/reactor/parameters/parameterDefinitions.py
index 4063a2cf3..54b213782 100644
--- a/armi/reactor/parameters/parameterDefinitions.py
+++ b/armi/reactor/parameters/parameterDefinitions.py
@@ -25,15 +25,15 @@
 --------
 armi.reactor.parameters
 """
-from typing import Any, Dict, Optional, Sequence, Tuple, Type
 import enum
 import functools
 import re
+from typing import Any, Dict, Optional, Sequence, Tuple, Type
 
 import numpy as np
 
 from armi.reactor.flags import Flags
-from armi.reactor.parameters.exceptions import ParameterError, ParameterDefinitionError
+from armi.reactor.parameters.exceptions import ParameterDefinitionError, ParameterError
 
 # bitwise masks for high-speed operations on the `assigned` attribute
 # see: https://web.archive.org/web/20120225043338/http://www.vipan.com/htdocs/bitwisehelp.html
diff --git a/armi/reactor/reactors.py b/armi/reactor/reactors.py
index 1c5b862d5..4354fe60b 100644
--- a/armi/reactor/reactors.py
+++ b/armi/reactor/reactors.py
@@ -16,16 +16,13 @@
 Reactor objects represent the highest level in the hierarchy of structures that compose the system
 to be modeled.
 """
-from typing import Optional
 import copy
+from typing import Optional
 
-from armi import getPluginManagerOrFail
-from armi import runLog
-from armi.reactor import composites
-from armi.reactor import reactorParameters
+from armi import getPluginManagerOrFail, runLog
+from armi.reactor import composites, reactorParameters
 from armi.reactor.cores import Core
-from armi.reactor.excoreStructure import ExcoreCollection
-from armi.reactor.excoreStructure import ExcoreStructure
+from armi.reactor.excoreStructure import ExcoreCollection, ExcoreStructure
 from armi.reactor.systemLayoutInput import SystemLayoutInput
 from armi.settings.fwSettings.globalSettings import (
     CONF_GEOM_FILE,
diff --git a/armi/reactor/systemLayoutInput.py b/armi/reactor/systemLayoutInput.py
index 38573b029..7b7cdb659 100644
--- a/armi/reactor/systemLayoutInput.py
+++ b/armi/reactor/systemLayoutInput.py
@@ -25,20 +25,18 @@
 reactor.blueprints.gridBlueprint
 """
 
-from collections import OrderedDict
-from copy import copy
 import os
 import sys
 import xml.etree.ElementTree as ET
+from collections import OrderedDict
+from copy import copy
 
-from ruamel.yaml import YAML
 import voluptuous as vol
+from ruamel.yaml import YAML
 
 from armi import runLog
-from armi.reactor import geometry
-from armi.reactor import grids
-from armi.utils import asciimaps
-from armi.utils import directoryChangers
+from armi.reactor import geometry, grids
+from armi.utils import asciimaps, directoryChangers
 
 INP_SYSTEMS = "reactor"
 INP_SYMMETRY = "symmetry"
diff --git a/armi/reactor/tests/test_assemblies.py b/armi/reactor/tests/test_assemblies.py
index 787dd129c..d32494725 100644
--- a/armi/reactor/tests/test_assemblies.py
+++ b/armi/reactor/tests/test_assemblies.py
@@ -21,31 +21,30 @@
 import numpy as np
 from numpy.testing import assert_allclose
 
-from armi import settings
-from armi import tests
+from armi import settings, tests
 from armi.physics.neutronics.settings import (
     CONF_LOADING_FILE,
     CONF_XS_KERNEL,
 )
-from armi.reactor import assemblies
-from armi.reactor import blocks
-from armi.reactor import blueprints
-from armi.reactor import components
-from armi.reactor import geometry
-from armi.reactor import parameters
-from armi.reactor import reactors
+from armi.reactor import (
+    assemblies,
+    blocks,
+    blueprints,
+    components,
+    geometry,
+    parameters,
+    reactors,
+)
 from armi.reactor.assemblies import (
-    copy,
     Flags,
-    grids,
     HexAssembly,
+    copy,
+    grids,
     runLog,
 )
 from armi.reactor.tests import test_reactors
 from armi.tests import TEST_ROOT, mockRunLogs
-from armi.utils import directoryChangers
-from armi.utils import textProcessors
-
+from armi.utils import directoryChangers, textProcessors
 
 NUM_BLOCKS = 3
 
diff --git a/armi/reactor/tests/test_blocks.py b/armi/reactor/tests/test_blocks.py
index ff55fe517..aa6c914d4 100644
--- a/armi/reactor/tests/test_blocks.py
+++ b/armi/reactor/tests/test_blocks.py
@@ -39,11 +39,14 @@
 from armi.reactor.tests.test_assemblies import makeTestAssembly
 from armi.testing import loadTestReactor
 from armi.tests import ISOAA_PATH, TEST_ROOT
-from armi.utils import hexagon, units, densityTools
+from armi.utils import densityTools, hexagon, units
 from armi.utils.directoryChangers import TemporaryDirectoryChanger
-from armi.utils.units import ASCII_LETTER_A, ASCII_LETTER_Z, ASCII_LETTER_a
-from armi.utils.units import MOLES_PER_CC_TO_ATOMS_PER_BARN_CM
-
+from armi.utils.units import (
+    ASCII_LETTER_A,
+    ASCII_LETTER_Z,
+    MOLES_PER_CC_TO_ATOMS_PER_BARN_CM,
+    ASCII_LETTER_a,
+)
 
 NUM_PINS_IN_TEST_BLOCK = 217
 
diff --git a/armi/reactor/tests/test_components.py b/armi/reactor/tests/test_components.py
index 18e8a530e..ad32245e4 100644
--- a/armi/reactor/tests/test_components.py
+++ b/armi/reactor/tests/test_components.py
@@ -22,8 +22,7 @@
 
 from armi.materials import air, alloy200
 from armi.materials.material import Material
-from armi.reactor import components
-from armi.reactor import flags
+from armi.reactor import components, flags
 from armi.reactor.blocks import Block
 from armi.reactor.components import (
     Circle,
diff --git a/armi/reactor/tests/test_composites.py b/armi/reactor/tests/test_composites.py
index 96966a768..861faa80c 100644
--- a/armi/reactor/tests/test_composites.py
+++ b/armi/reactor/tests/test_composites.py
@@ -13,31 +13,23 @@
 # limitations under the License.
 
 """Tests for the composite pattern."""
-from copy import deepcopy
 import logging
 import unittest
+from copy import deepcopy
 
-from armi import nuclearDataIO
-from armi import runLog
-from armi import settings
-from armi import utils
+from armi import nuclearDataIO, runLog, settings, utils
 from armi.nucDirectory import nucDir, nuclideBases
 from armi.physics.neutronics.fissionProductModel.tests.test_lumpedFissionProduct import (
     getDummyLFPFile,
 )
-from armi.reactor import assemblies
-from armi.reactor import components
-from armi.reactor import composites
-from armi.reactor import grids
-from armi.reactor import parameters
+from armi.reactor import assemblies, components, composites, grids, parameters
 from armi.reactor.blueprints import assemblyBlueprint
 from armi.reactor.components import basicShapes
 from armi.reactor.composites import getReactionRateDict
 from armi.reactor.flags import Flags, TypeSpec
 from armi.reactor.tests.test_blocks import loadTestBlock
 from armi.testing import loadTestReactor
-from armi.tests import ISOAA_PATH
-from armi.tests import mockRunLogs
+from armi.tests import ISOAA_PATH, mockRunLogs
 
 
 class MockBP:
diff --git a/armi/reactor/tests/test_hexBlockRotate.py b/armi/reactor/tests/test_hexBlockRotate.py
index 610286c2e..d0bac628b 100644
--- a/armi/reactor/tests/test_hexBlockRotate.py
+++ b/armi/reactor/tests/test_hexBlockRotate.py
@@ -22,12 +22,12 @@
 from armi.reactor.blocks import HexBlock
 from armi.reactor.components import Component
 from armi.reactor.grids import (
-    MultiIndexLocation,
     CoordinateLocation,
-    IndexLocation,
     HexGrid,
+    IndexLocation,
+    MultiIndexLocation,
 )
-from armi.reactor.tests.test_blocks import loadTestBlock, NUM_PINS_IN_TEST_BLOCK
+from armi.reactor.tests.test_blocks import NUM_PINS_IN_TEST_BLOCK, loadTestBlock
 from armi.utils import iterables
 
 
diff --git a/armi/reactor/tests/test_parameters.py b/armi/reactor/tests/test_parameters.py
index 8a324f635..9f1a5e018 100644
--- a/armi/reactor/tests/test_parameters.py
+++ b/armi/reactor/tests/test_parameters.py
@@ -12,11 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 """Tests for assorted Parameters tools."""
-from glob import glob
-from shutil import copyfile
 import copy
 import os
 import unittest
+from glob import glob
+from shutil import copyfile
 
 from armi.reactor import parameters
 from armi.reactor.reactorParameters import makeParametersReadOnly
diff --git a/armi/reactor/tests/test_reactors.py b/armi/reactor/tests/test_reactors.py
index 89ad36038..561c55247 100644
--- a/armi/reactor/tests/test_reactors.py
+++ b/armi/reactor/tests/test_reactors.py
@@ -22,27 +22,22 @@
 
 from numpy.testing import assert_allclose, assert_equal
 
-from armi import operators
-from armi import runLog
-from armi import settings
-from armi import tests
+from armi import operators, runLog, settings, tests
 from armi.materials import uZr
 from armi.physics.neutronics.settings import CONF_XS_KERNEL
-from armi.reactor import assemblies
-from armi.reactor import blocks
-from armi.reactor import geometry
-from armi.reactor import grids
-from armi.reactor import reactors
+from armi.reactor import assemblies, blocks, geometry, grids, reactors
 from armi.reactor.components import Hexagon, Rectangle
 from armi.reactor.composites import Composite
 from armi.reactor.converters import geometryConverters
 from armi.reactor.converters.axialExpansionChanger import AxialExpansionChanger
 from armi.reactor.flags import Flags
 from armi.reactor.spentFuelPool import SpentFuelPool
-from armi.settings.fwSettings.globalSettings import CONF_ASSEM_FLAGS_SKIP_AXIAL_EXP
-from armi.settings.fwSettings.globalSettings import CONF_SORT_REACTOR
+from armi.settings.fwSettings.globalSettings import (
+    CONF_ASSEM_FLAGS_SKIP_AXIAL_EXP,
+    CONF_SORT_REACTOR,
+)
 from armi.testing import loadTestReactor, reduceTestReactorRings  # noqa: F401
-from armi.tests import mockRunLogs, TEST_ROOT
+from armi.tests import TEST_ROOT, mockRunLogs
 from armi.utils import directoryChangers
 
 _THIS_DIR = os.path.dirname(__file__)
diff --git a/armi/reactor/tests/test_zones.py b/armi/reactor/tests/test_zones.py
index 4ded16430..9ac40a6d3 100644
--- a/armi/reactor/tests/test_zones.py
+++ b/armi/reactor/tests/test_zones.py
@@ -18,13 +18,15 @@
 import unittest
 
 from armi import runLog
-from armi.reactor import assemblies
-from armi.reactor import blocks
-from armi.reactor import blueprints
-from armi.reactor import geometry
-from armi.reactor import grids
-from armi.reactor import reactors
-from armi.reactor import zones
+from armi.reactor import (
+    assemblies,
+    blocks,
+    blueprints,
+    geometry,
+    grids,
+    reactors,
+    zones,
+)
 from armi.reactor.tests import test_reactors
 from armi.tests import mockRunLogs
 
diff --git a/armi/settings/__init__.py b/armi/settings/__init__.py
index 258864bde..31bc31307 100644
--- a/armi/settings/__init__.py
+++ b/armi/settings/__init__.py
@@ -20,21 +20,22 @@
 availability fraction and things like that. The ARMI Framework itself has many settings
 of its own, and plugins typically register some of their own settings as well.
 """
-from typing import List
 import fnmatch
 import glob
 import os
+from typing import List
 
 from ruamel import yaml
 
 from armi import runLog
 from armi.settings.caseSettings import Settings
-from armi.settings.setting import Default  # noqa: F401
-from armi.settings.setting import Option  # noqa: F401
-from armi.settings.setting import Setting
+from armi.settings.setting import (
+    Default,  # noqa: F401
+    Option,  # noqa: F401
+    Setting,
+)
 from armi.utils.customExceptions import InvalidSettingsFileError
 
-
 NOT_ENABLED = ""  # An empty setting value implies that the feature
 
 
diff --git a/armi/settings/caseSettings.py b/armi/settings/caseSettings.py
index 165359fd5..76a2d2f0b 100644
--- a/armi/settings/caseSettings.py
+++ b/armi/settings/caseSettings.py
@@ -25,10 +25,10 @@
 import logging
 import os
 from copy import copy, deepcopy
+
 from ruamel.yaml import YAML
 
-from armi import context
-from armi import runLog
+from armi import context, runLog
 from armi.settings import settingsIO
 from armi.settings.setting import Setting
 from armi.utils import pathTools
diff --git a/armi/settings/fwSettings/__init__.py b/armi/settings/fwSettings/__init__.py
index a7caffdb4..22e96f542 100644
--- a/armi/settings/fwSettings/__init__.py
+++ b/armi/settings/fwSettings/__init__.py
@@ -16,9 +16,7 @@
 from typing import List
 
 from armi.settings import setting
-from armi.settings.fwSettings import globalSettings
-from armi.settings.fwSettings import databaseSettings
-from armi.settings.fwSettings import reportSettings
+from armi.settings.fwSettings import databaseSettings, globalSettings, reportSettings
 
 
 def getFrameworkSettings() -> List[setting.Setting]:
diff --git a/armi/settings/fwSettings/globalSettings.py b/armi/settings/fwSettings/globalSettings.py
index 353a0cc79..cb07e9b33 100644
--- a/armi/settings/fwSettings/globalSettings.py
+++ b/armi/settings/fwSettings/globalSettings.py
@@ -29,7 +29,6 @@
 from armi.settings.fwSettings import tightCouplingSettings
 from armi.utils.mathematics import isMonotonic
 
-
 # Framework settings
 CONF_ACCEPTABLE_BLOCK_AREA_ERROR = "acceptableBlockAreaError"
 CONF_ASSEM_FLAGS_SKIP_AXIAL_EXP = "assemFlagsToSkipAxialExpansion"
diff --git a/armi/settings/fwSettings/reportSettings.py b/armi/settings/fwSettings/reportSettings.py
index 67c5a8322..5cb16c5a4 100644
--- a/armi/settings/fwSettings/reportSettings.py
+++ b/armi/settings/fwSettings/reportSettings.py
@@ -18,7 +18,6 @@
 
 from armi.settings import setting
 
-
 CONF_GEN_REPORTS = "genReports"
 CONF_ASSEM_POW_SUMMARY = "assemPowSummary"
 CONF_SUMMARIZE_ASSEM_DESIGN = "summarizeAssemDesign"
diff --git a/armi/settings/fwSettings/tests/test_tightCouplingSettings.py b/armi/settings/fwSettings/tests/test_tightCouplingSettings.py
index 7336ba713..451617b8b 100644
--- a/armi/settings/fwSettings/tests/test_tightCouplingSettings.py
+++ b/armi/settings/fwSettings/tests/test_tightCouplingSettings.py
@@ -21,11 +21,11 @@
 import io
 import unittest
 
-from ruamel.yaml import YAML
 import voluptuous as vol
+from ruamel.yaml import YAML
 
-from armi.settings.fwSettings.tightCouplingSettings import TightCouplingSettingDef
 from armi.settings.fwSettings.tightCouplingSettings import (
+    TightCouplingSettingDef,
     tightCouplingSettingsValidator,
 )
 
diff --git a/armi/settings/setting.py b/armi/settings/setting.py
index 1d83cccc7..c4d901d0f 100644
--- a/armi/settings/setting.py
+++ b/armi/settings/setting.py
@@ -23,17 +23,16 @@
 complex schema validation for settings that are more complex
 dictionaries (e.g. XS, rx coeffs).
 """
-from collections import namedtuple
-from typing import List, Optional, Tuple
 import copy
 import datetime
+from collections import namedtuple
+from typing import List, Optional, Tuple
 
 import voluptuous as vol
 
 from armi import runLog
 from armi.reactor.flags import Flags
 
-
 # Options are used to imbue existing settings with new Options. This allows a setting
 # like `neutronicsKernel` to strictly enforce options, even though the plugin that
 # defines it does not know all possible options, which may be provided from other
diff --git a/armi/settings/settingsIO.py b/armi/settings/settingsIO.py
index 516b5f238..d1171dfb6 100644
--- a/armi/settings/settingsIO.py
+++ b/armi/settings/settingsIO.py
@@ -16,19 +16,18 @@
 :py:class:`~armi.settings.caseSettings.Settings`, and the contained
 :py:class:`~armi.settings.setting.Setting`.
 """
-from typing import Dict, Tuple, Set
 import collections
 import datetime
 import enum
 import os
 import sys
+from typing import Dict, Set, Tuple
 
-from ruamel.yaml import YAML
 import ruamel.yaml.comments
+from ruamel.yaml import YAML
 
-from armi import runLog
+from armi import context, runLog
 from armi.meta import __version__ as version
-from armi import context
 from armi.settings.setting import Setting
 from armi.utils.customExceptions import (
     InvalidSettingsFileError,
diff --git a/armi/settings/tests/test_inspectors.py b/armi/settings/tests/test_inspectors.py
index cb27b3e96..e3d81095d 100644
--- a/armi/settings/tests/test_inspectors.py
+++ b/armi/settings/tests/test_inspectors.py
@@ -16,9 +16,7 @@
 import os
 import unittest
 
-from armi import context
-from armi import operators
-from armi import settings
+from armi import context, operators, settings
 from armi.settings import settingsValidation
 from armi.settings.settingsValidation import createQueryRevertBadPathToDefault
 from armi.utils import directoryChangers
diff --git a/armi/settings/tests/test_settings.py b/armi/settings/tests/test_settings.py
index 3cfae7386..1f363565b 100644
--- a/armi/settings/tests/test_settings.py
+++ b/armi/settings/tests/test_settings.py
@@ -18,23 +18,17 @@
 import os
 import unittest
 
-from ruamel.yaml import YAML
 import voluptuous as vol
+from ruamel.yaml import YAML
 
-from armi import configure
-from armi import getApp
-from armi import getPluginManagerOrFail
-from armi import plugins
-from armi import settings
+from armi import configure, getApp, getPluginManagerOrFail, plugins, settings
 from armi.physics.fuelCycle import FuelHandlerPlugin
-from armi.physics.fuelCycle.settings import CONF_CIRCULAR_RING_ORDER
-from armi.physics.fuelCycle.settings import CONF_SHUFFLE_LOGIC
+from armi.physics.fuelCycle.settings import CONF_CIRCULAR_RING_ORDER, CONF_SHUFFLE_LOGIC
 from armi.physics.neutronics.settings import CONF_NEUTRONICS_KERNEL
 from armi.reactor.flags import Flags
-from armi.settings import caseSettings
-from armi.settings import setting
+from armi.settings import caseSettings, setting
 from armi.settings.settingsValidation import Inspector, validateVersion
-from armi.tests import TEST_ROOT, ARMI_RUN_PATH
+from armi.tests import ARMI_RUN_PATH, TEST_ROOT
 from armi.utils import directoryChangers
 from armi.utils.customExceptions import NonexistentSetting
 
diff --git a/armi/settings/tests/test_settingsIO.py b/armi/settings/tests/test_settingsIO.py
index 9b99f1b3c..b2f0e2552 100644
--- a/armi/settings/tests/test_settingsIO.py
+++ b/armi/settings/tests/test_settingsIO.py
@@ -17,11 +17,9 @@
 import os
 import unittest
 
-from armi import context
-from armi import settings
+from armi import context, settings
 from armi.cli import entryPoint
-from armi.settings import setting
-from armi.settings import settingsIO
+from armi.settings import setting, settingsIO
 from armi.tests import TEST_ROOT
 from armi.utils import directoryChangers
 from armi.utils.customExceptions import (
diff --git a/armi/tests/__init__.py b/armi/tests/__init__.py
index 6e5607a2a..be870e3ae 100644
--- a/armi/tests/__init__.py
+++ b/armi/tests/__init__.py
@@ -17,19 +17,16 @@
 This package contains some input files that can be used across
 a wide variety of unit tests in other lower-level subpackages.
 """
-from typing import Optional
 import datetime
 import itertools
 import os
 import re
 import shutil
 import unittest
+from typing import Optional
 
-from armi import context
-from armi import runLog
-from armi.reactor import geometry
-from armi.reactor import grids
-from armi.reactor import reactors
+from armi import context, runLog
+from armi.reactor import geometry, grids, reactors
 
 TEST_ROOT = os.path.dirname(os.path.abspath(__file__))
 ARMI_RUN_PATH = os.path.join(TEST_ROOT, "armiRun.yaml")
diff --git a/armi/tests/anl-afci-177/anl-afci-177-fuelManagement.py b/armi/tests/anl-afci-177/anl-afci-177-fuelManagement.py
index 62953ce44..cc608e6ef 100644
--- a/armi/tests/anl-afci-177/anl-afci-177-fuelManagement.py
+++ b/armi/tests/anl-afci-177/anl-afci-177-fuelManagement.py
@@ -12,9 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from armi.utils import units
-
 from armi.physics.fuelCycle.fuelHandlers import FuelHandler
+from armi.utils import units
 
 
 class SampleShuffler(FuelHandler):
diff --git a/armi/tests/test_apps.py b/armi/tests/test_apps.py
index c14ffe5a6..69a7478f2 100644
--- a/armi/tests/test_apps.py
+++ b/armi/tests/test_apps.py
@@ -16,15 +16,17 @@
 import copy
 import unittest
 
-from armi import configure
-from armi import context
-from armi import getApp
-from armi import getDefaultPluginManager
-from armi import isStableReleaseVersion
-from armi import meta
-from armi import plugins
-from armi.reactor.flags import Flags
+from armi import (
+    configure,
+    context,
+    getApp,
+    getDefaultPluginManager,
+    isStableReleaseVersion,
+    meta,
+    plugins,
+)
 from armi.__main__ import main
+from armi.reactor.flags import Flags
 
 
 class TestPlugin1(plugins.ArmiPlugin):
diff --git a/armi/tests/test_interfaces.py b/armi/tests/test_interfaces.py
index 1f23afdd3..53bdbc07f 100644
--- a/armi/tests/test_interfaces.py
+++ b/armi/tests/test_interfaces.py
@@ -15,8 +15,7 @@
 """Tests the Interface."""
 import unittest
 
-from armi import interfaces
-from armi import settings
+from armi import interfaces, settings
 
 
 class DummyInterface(interfaces.Interface):
diff --git a/armi/tests/test_lwrInputs.py b/armi/tests/test_lwrInputs.py
index 6cc37b81b..297a3ad3f 100644
--- a/armi/tests/test_lwrInputs.py
+++ b/armi/tests/test_lwrInputs.py
@@ -12,16 +12,15 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 """Tests for C5G7 input files."""
-from logging import WARNING
 import os
 import unittest
+from logging import WARNING
 
 from armi import runLog
 from armi.reactor.flags import Flags
-from armi.tests import mockRunLogs
-from armi.tests import TEST_ROOT
-from armi.utils import directoryChangers
 from armi.reactor.tests import test_reactors
+from armi.tests import TEST_ROOT, mockRunLogs
+from armi.utils import directoryChangers
 
 TEST_INPUT_TITLE = "c5g7-settings.yaml"
 
diff --git a/armi/tests/test_mpiActions.py b/armi/tests/test_mpiActions.py
index 35bea5007..e89a3fc1b 100644
--- a/armi/tests/test_mpiActions.py
+++ b/armi/tests/test_mpiActions.py
@@ -14,16 +14,16 @@
 """Tests for MPI actions."""
 import unittest
 
+from armi import context
 from armi.mpiActions import (
-    _diagnosePickleError,
     DistributeStateAction,
     DistributionAction,
     MpiAction,
-    runActions,
+    _diagnosePickleError,
     _disableForExclusiveTasks,
     _makeQueue,
+    runActions,
 )
-from armi import context
 from armi.reactor.tests import test_reactors
 from armi.tests import mockRunLogs
 from armi.utils import iterables
diff --git a/armi/tests/test_mpiFeatures.py b/armi/tests/test_mpiFeatures.py
index 3682d5687..9194d5dab 100644
--- a/armi/tests/test_mpiFeatures.py
+++ b/armi/tests/test_mpiFeatures.py
@@ -24,24 +24,20 @@
 or
 mpiexec.exe -n 2 python -m pytest armi/tests/test_mpiFeatures.py
 """
-from unittest.mock import patch
 import os
 import shutil
 import unittest
+from unittest.mock import patch
 
-from armi import context
-from armi import mpiActions
-from armi import settings
+from armi import context, mpiActions, settings
 from armi.interfaces import Interface
 from armi.mpiActions import DistributeStateAction
 from armi.operators import OperatorMPI
 from armi.physics.neutronics.const import CONF_CROSS_SECTION
-from armi.reactor import blueprints
-from armi.reactor import reactors
+from armi.reactor import blueprints, reactors
 from armi.reactor.parameters import parameterDefinitions
 from armi.reactor.tests import test_reactors
-from armi.tests import ARMI_RUN_PATH, TEST_ROOT
-from armi.tests import mockRunLogs
+from armi.tests import ARMI_RUN_PATH, TEST_ROOT, mockRunLogs
 from armi.utils import pathTools
 from armi.utils.directoryChangers import TemporaryDirectoryChanger
 
diff --git a/armi/tests/test_mpiParameters.py b/armi/tests/test_mpiParameters.py
index 4754a7690..a0502ddf9 100644
--- a/armi/tests/test_mpiParameters.py
+++ b/armi/tests/test_mpiParameters.py
@@ -16,8 +16,7 @@
 import unittest
 
 from armi import context
-from armi.reactor import composites
-from armi.reactor import parameters
+from armi.reactor import composites, parameters
 
 # determine if this is a parallel run, and MPI is installed
 MPI_EXE = None
diff --git a/armi/tests/test_plugins.py b/armi/tests/test_plugins.py
index 6626d120d..7852ce653 100644
--- a/armi/tests/test_plugins.py
+++ b/armi/tests/test_plugins.py
@@ -19,13 +19,15 @@
 
 import yamlize
 
-from armi import context
-from armi import getApp
-from armi import getPluginManagerOrFail
-from armi import interfaces
-from armi import plugins
-from armi import settings
-from armi import utils
+from armi import (
+    context,
+    getApp,
+    getPluginManagerOrFail,
+    interfaces,
+    plugins,
+    settings,
+    utils,
+)
 from armi.bookkeeping.db.passiveDBLoadPlugin import PassiveDBLoadPlugin
 from armi.physics.neutronics import NeutronicsPlugin
 from armi.reactor.blocks import Block
diff --git a/armi/tests/test_user_plugins.py b/armi/tests/test_user_plugins.py
index 0840afd58..55c6e1005 100644
--- a/armi/tests/test_user_plugins.py
+++ b/armi/tests/test_user_plugins.py
@@ -16,11 +16,7 @@
 import os
 import unittest
 
-from armi import context
-from armi import getApp
-from armi import interfaces
-from armi import plugins
-from armi import utils
+from armi import context, getApp, interfaces, plugins, utils
 from armi.reactor.flags import Flags
 from armi.reactor.tests import test_reactors
 from armi.settings import caseSettings
diff --git a/armi/utils/asciimaps.py b/armi/utils/asciimaps.py
index 20cee223f..1a632db64 100644
--- a/armi/utils/asciimaps.py
+++ b/armi/utils/asciimaps.py
@@ -49,7 +49,6 @@
 
 """
 import re
-
 from typing import Union
 
 from armi import runLog
diff --git a/armi/utils/codeTiming.py b/armi/utils/codeTiming.py
index c01b21435..12d22c2a8 100644
--- a/armi/utils/codeTiming.py
+++ b/armi/utils/codeTiming.py
@@ -14,9 +14,9 @@
 """Utilities related to profiling code."""
 
 import copy
+import functools
 import os
 import time
-import functools
 
 
 def timed(*args):
diff --git a/armi/utils/customExceptions.py b/armi/utils/customExceptions.py
index 229b31ffa..b3d62e380 100644
--- a/armi/utils/customExceptions.py
+++ b/armi/utils/customExceptions.py
@@ -16,8 +16,9 @@
 Globally accessible exception definitions for better granularity on exception behavior and
 exception handling behavior.
 """
+from inspect import getframeinfo, stack
+
 from armi import runLog
-from inspect import stack, getframeinfo
 
 
 def info(func):
diff --git a/armi/utils/densityTools.py b/armi/utils/densityTools.py
index 94b46a82d..59d15438f 100644
--- a/armi/utils/densityTools.py
+++ b/armi/utils/densityTools.py
@@ -13,11 +13,11 @@
 # limitations under the License.
 
 """Assorted utilities to help with basic density calculations."""
-from typing import Tuple, List, Dict
+from typing import Dict, List, Tuple
 
-from armi.nucDirectory import nucDir, nuclideBases, elements
-from armi.utils import units
 from armi import runLog
+from armi.nucDirectory import elements, nucDir, nuclideBases
+from armi.utils import units
 
 
 def getNDensFromMasses(rho, massFracs, normalize=False):
diff --git a/armi/utils/directoryChangers.py b/armi/utils/directoryChangers.py
index 50a5c0cbd..4d8ea5146 100644
--- a/armi/utils/directoryChangers.py
+++ b/armi/utils/directoryChangers.py
@@ -19,10 +19,8 @@
 import shutil
 import string
 
-from armi import context
-from armi import runLog
-from armi.utils import pathTools
-from armi.utils import safeCopy, safeMove
+from armi import context, runLog
+from armi.utils import pathTools, safeCopy, safeMove
 
 
 def _changeDirectory(destination):
diff --git a/armi/utils/flags.py b/armi/utils/flags.py
index f0b83c271..51fe1d726 100644
--- a/armi/utils/flags.py
+++ b/armi/utils/flags.py
@@ -25,8 +25,7 @@
 provides most of the safety and functionality.
 """
 import math
-
-from typing import Dict, Union, Sequence, List, Tuple
+from typing import Dict, List, Sequence, Tuple, Union
 
 
 class auto:  # noqa: N801
diff --git a/armi/utils/gridEditor.py b/armi/utils/gridEditor.py
index 025afa386..9513b7699 100644
--- a/armi/utils/gridEditor.py
+++ b/armi/utils/gridEditor.py
@@ -63,21 +63,18 @@
 import sys
 from typing import Dict, Optional, Sequence, Tuple, Union
 
-import wx
-import wx.adv
 import numpy as np
 import numpy.linalg
+import wx
+import wx.adv
 
-from armi.utils import hexagon
-from armi.utils import textProcessors
-from armi.settings.caseSettings import Settings
-from armi.reactor import geometry
-from armi.reactor import grids
-from armi.reactor.flags import Flags
+from armi.reactor import geometry, grids
 from armi.reactor.blueprints import Blueprints, gridBlueprint, migrate
-from armi.reactor.blueprints.gridBlueprint import GridBlueprint, saveToStream
 from armi.reactor.blueprints.assemblyBlueprint import AssemblyBlueprint
-
+from armi.reactor.blueprints.gridBlueprint import GridBlueprint, saveToStream
+from armi.reactor.flags import Flags
+from armi.settings.caseSettings import Settings
+from armi.utils import hexagon, textProcessors
 
 UNIT_SIZE = 50  # pixels per assembly
 UNIT_MARGIN = 40  # offset applied to the draw area margins
diff --git a/armi/utils/iterables.py b/armi/utils/iterables.py
index 70fafc0a2..8169f81f9 100644
--- a/armi/utils/iterables.py
+++ b/armi/utils/iterables.py
@@ -13,8 +13,8 @@
 # limitations under the License.
 
 """Module of utilities to help dealing with iterable objects in Python."""
-from itertools import chain, filterfalse, tee
 import struct
+from itertools import chain, filterfalse, tee
 
 import numpy as np
 
diff --git a/armi/utils/parsing.py b/armi/utils/parsing.py
index 3bd379688..e8a716230 100644
--- a/armi/utils/parsing.py
+++ b/armi/utils/parsing.py
@@ -16,6 +16,7 @@
 
 import ast
 import copy
+
 from dateutil import parser
 
 
diff --git a/armi/utils/plotting.py b/armi/utils/plotting.py
index 5e99c48a4..5584bc489 100644
--- a/armi/utils/plotting.py
+++ b/armi/utils/plotting.py
@@ -29,26 +29,25 @@
 import os
 import re
 
-from matplotlib.collections import PatchCollection
-from matplotlib.widgets import Slider
-from mpl_toolkits import axes_grid1
-from ordered_set import OrderedSet
 import matplotlib.colors as mcolors
 import matplotlib.patches
 import matplotlib.pyplot as plt
 import matplotlib.text as mpl_text
 import numpy as np
+from matplotlib.collections import PatchCollection
+from matplotlib.widgets import Slider
+from mpl_toolkits import axes_grid1
+from ordered_set import OrderedSet
 
 from armi import runLog
 from armi.bookkeeping import report
 from armi.materials import custom
 from armi.reactor import grids
-from armi.reactor.components import Helix, Circle, DerivedShape
+from armi.reactor.components import Circle, DerivedShape, Helix
 from armi.reactor.components.basicShapes import Hexagon, Rectangle, Square
 from armi.reactor.flags import Flags
 from armi.utils import hexagon
 
-
 LUMINANCE_WEIGHTS = np.array([0.3, 0.59, 0.11, 0.0])
 
 
diff --git a/armi/utils/reportPlotting.py b/armi/utils/reportPlotting.py
index 936bbec1d..c9e79a88f 100644
--- a/armi/utils/reportPlotting.py
+++ b/armi/utils/reportPlotting.py
@@ -28,16 +28,15 @@
 import math
 import os
 
-from matplotlib import colormaps
-from matplotlib import colors as mpltcolors
 import matplotlib.path
 import matplotlib.projections.polar
 import matplotlib.pyplot as plt
 import matplotlib.spines
 import numpy as np
+from matplotlib import colormaps
+from matplotlib import colors as mpltcolors
 
-from armi import runLog
-from armi import settings
+from armi import runLog, settings
 from armi.bookkeeping import report
 from armi.physics.neutronics import crossSectionGroupManager
 from armi.reactor.flags import Flags
diff --git a/armi/utils/tabulate.py b/armi/utils/tabulate.py
index 2f78c3ac8..2c0dee34d 100644
--- a/armi/utils/tabulate.py
+++ b/armi/utils/tabulate.py
@@ -210,14 +210,14 @@
 
 Header column width can be specified in a similar way using `maxheadercolwidth`.
 """
+import dataclasses
+import math
+import re
 from collections import namedtuple
 from collections.abc import Iterable, Sized
-from functools import reduce, partial
+from functools import partial, reduce
 from itertools import chain, zip_longest
 from textwrap import TextWrapper
-import dataclasses
-import math
-import re
 
 from armi import runLog
 
diff --git a/armi/utils/tests/test_asciimaps.py b/armi/utils/tests/test_asciimaps.py
index b154b1b50..48711ecf3 100644
--- a/armi/utils/tests/test_asciimaps.py
+++ b/armi/utils/tests/test_asciimaps.py
@@ -17,7 +17,6 @@
 
 from armi.utils import asciimaps
 
-
 CARTESIAN_MAP = """2 2 2 2 2
 2 2 2 2 2
 2 1 1 1 2
diff --git a/armi/utils/tests/test_custom_exceptions.py b/armi/utils/tests/test_custom_exceptions.py
index 7060307a3..e8729dd4d 100644
--- a/armi/utils/tests/test_custom_exceptions.py
+++ b/armi/utils/tests/test_custom_exceptions.py
@@ -15,8 +15,7 @@
 import unittest
 
 from armi.tests import mockRunLogs
-from armi.utils.customExceptions import info, important
-from armi.utils.customExceptions import warn, warn_when_root
+from armi.utils.customExceptions import important, info, warn, warn_when_root
 
 
 class CustomExceptionTests(unittest.TestCase):
diff --git a/armi/utils/tests/test_directoryChangers.py b/armi/utils/tests/test_directoryChangers.py
index 30aec94fc..3b95b000e 100644
--- a/armi/utils/tests/test_directoryChangers.py
+++ b/armi/utils/tests/test_directoryChangers.py
@@ -13,13 +13,12 @@
 # limitations under the License.
 
 """Module for testing directoryChangers."""
-from pathlib import Path
 import os
 import shutil
 import unittest
+from pathlib import Path
 
-from armi.utils import directoryChangers
-from armi.utils import directoryChangersMpi
+from armi.utils import directoryChangers, directoryChangersMpi
 
 
 class ExpectedException(Exception):
diff --git a/armi/utils/tests/test_mathematics.py b/armi/utils/tests/test_mathematics.py
index b7554b07a..2a38d4274 100644
--- a/armi/utils/tests/test_mathematics.py
+++ b/armi/utils/tests/test_mathematics.py
@@ -12,8 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 """Testing mathematics utilities."""
-from math import sqrt
 import unittest
+from math import sqrt
 
 import numpy as np
 
diff --git a/armi/utils/tests/test_outputCache.py b/armi/utils/tests/test_outputCache.py
index b8052ac58..fbc9a1545 100644
--- a/armi/utils/tests/test_outputCache.py
+++ b/armi/utils/tests/test_outputCache.py
@@ -16,8 +16,7 @@
 import time
 import unittest
 
-from armi.utils import directoryChangers
-from armi.utils import outputCache
+from armi.utils import directoryChangers, outputCache
 
 
 class TestOutputCache(unittest.TestCase):
diff --git a/armi/utils/tests/test_plotting.py b/armi/utils/tests/test_plotting.py
index bc28b5991..318e52447 100644
--- a/armi/utils/tests/test_plotting.py
+++ b/armi/utils/tests/test_plotting.py
@@ -20,8 +20,7 @@
 
 from armi import settings
 from armi.nuclearDataIO.cccc import isotxs
-from armi.reactor import blueprints
-from armi.reactor import reactors
+from armi.reactor import blueprints, reactors
 from armi.reactor.flags import Flags
 from armi.reactor.tests import test_reactors
 from armi.tests import ISOAA_PATH, TEST_ROOT
diff --git a/armi/utils/tests/test_tabulate.py b/armi/utils/tests/test_tabulate.py
index 1876cd250..06a27ec1b 100644
--- a/armi/utils/tests/test_tabulate.py
+++ b/armi/utils/tests/test_tabulate.py
@@ -19,32 +19,31 @@
 
 https://github.com/astanin/python-tabulate
 """
-from collections import defaultdict
-from collections import namedtuple
-from collections import OrderedDict
-from collections import UserDict
+import unittest
+from collections import OrderedDict, UserDict, defaultdict, namedtuple
 from dataclasses import dataclass
 from datetime import datetime
-import unittest
 
 import numpy as np
 
-from armi.utils.tabulate import _alignCellVeritically
-from armi.utils.tabulate import _alignColumn
-from armi.utils.tabulate import _bool
-from armi.utils.tabulate import _buildLine
-from armi.utils.tabulate import _buildRow
-from armi.utils.tabulate import _format
-from armi.utils.tabulate import _isMultiline
-from armi.utils.tabulate import _multilineWidth
-from armi.utils.tabulate import _normalizeTabularData
-from armi.utils.tabulate import _tableFormats
-from armi.utils.tabulate import _type
-from armi.utils.tabulate import _visibleWidth
-from armi.utils.tabulate import _wrapTextToColWidths
-from armi.utils.tabulate import SEPARATING_LINE
-from armi.utils.tabulate import tabulate
-from armi.utils.tabulate import tabulateFormats
+from armi.utils.tabulate import (
+    SEPARATING_LINE,
+    _alignCellVeritically,
+    _alignColumn,
+    _bool,
+    _buildLine,
+    _buildRow,
+    _format,
+    _isMultiline,
+    _multilineWidth,
+    _normalizeTabularData,
+    _tableFormats,
+    _type,
+    _visibleWidth,
+    _wrapTextToColWidths,
+    tabulate,
+    tabulateFormats,
+)
 
 
 class TestTabulateAPI(unittest.TestCase):
@@ -543,9 +542,11 @@ def test_alignCellVeriticallyBottomMultiTextMultiplePad(self):
 
     def test_assortedRareEdgeCases(self):
         """Test some of the more rare edge cases in the purely internal functions."""
-        from armi.utils.tabulate import _alignHeader
-        from armi.utils.tabulate import _prependRowIndex
-        from armi.utils.tabulate import _removeSeparatingLines
+        from armi.utils.tabulate import (
+            _alignHeader,
+            _prependRowIndex,
+            _removeSeparatingLines,
+        )
 
         self.assertEqual(_alignHeader("123", False, 3, 3, False, None), "123")
 
diff --git a/armi/utils/tests/test_textProcessors.py b/armi/utils/tests/test_textProcessors.py
index 1d15afcc6..141ebe58f 100644
--- a/armi/utils/tests/test_textProcessors.py
+++ b/armi/utils/tests/test_textProcessors.py
@@ -12,16 +12,16 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 """Tests for functions in textProcessors.py."""
-from io import StringIO
 import logging
 import os
 import pathlib
-import ruamel
 import unittest
+from io import StringIO
+
+import ruamel
 
 from armi import runLog
-from armi.tests import mockRunLogs
-from armi.tests import TEST_ROOT
+from armi.tests import TEST_ROOT, mockRunLogs
 from armi.utils import textProcessors
 from armi.utils.directoryChangers import TemporaryDirectoryChanger
 
diff --git a/armi/utils/tests/test_triangle.py b/armi/utils/tests/test_triangle.py
index 428f0eae2..cbf57bac1 100644
--- a/armi/utils/tests/test_triangle.py
+++ b/armi/utils/tests/test_triangle.py
@@ -13,6 +13,7 @@
 # limitations under the License.
 """Test the basic triangle math."""
 import unittest
+
 from armi.utils import triangle
 
 
diff --git a/armi/utils/tests/test_utils.py b/armi/utils/tests/test_utils.py
index 1adc18ff3..b514b5692 100644
--- a/armi/utils/tests/test_utils.py
+++ b/armi/utils/tests/test_utils.py
@@ -13,9 +13,9 @@
 # limitations under the License.
 
 """Testing some utility functions."""
-from collections import defaultdict
 import os
 import unittest
+from collections import defaultdict
 
 import numpy as np
 
diff --git a/armi/utils/textProcessors.py b/armi/utils/textProcessors.py
index db9868316..e62bf411f 100644
--- a/armi/utils/textProcessors.py
+++ b/armi/utils/textProcessors.py
@@ -14,13 +14,12 @@
 """Utility classes and functions for manipulating text files."""
 import io
 import os
-import re
 import pathlib
-from typing import List, Tuple, Union, Optional, TextIO
+import re
+from typing import List, Optional, TextIO, Tuple, Union
 
 from armi import runLog
 
-
 _INCLUDE_CTOR = False
 _INCLUDE_RE = re.compile(r"^([^#]*\s+)?!include\s+(.*)\n?$")
 _INDENT_RE = re.compile(r"^[\s\-\?:]*([^\s\-\?:].*)?$")
diff --git a/armi/utils/units.py b/armi/utils/units.py
index defa61110..a95061bd8 100644
--- a/armi/utils/units.py
+++ b/armi/utils/units.py
@@ -16,7 +16,6 @@
 
 import scipy.constants
 
-
 # Units (misc)
 DPA = "dpa"
 FIMA = "FIMA"
diff --git a/doc/conf.py b/doc/conf.py
index 1dc187fa4..987455cfd 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -35,10 +35,10 @@
 import sys
 import warnings
 
+import sphinx_rtd_theme
 from docutils import nodes, statemachine
 from docutils.parsers.rst import Directive, directives
 from sphinx.domains.python import PythonDomain
-import sphinx_rtd_theme
 
 # handle python import locations for this execution
 PYTHONPATH = os.path.abspath("..")
@@ -48,11 +48,8 @@
 # Add dochelpers.py from doc/.static/ directory
 sys.path.insert(0, ".static")
 
-from armi import apps
+from armi import apps, context, disableFutureConfigures, meta
 from armi import configure as armi_configure
-from armi import context
-from armi import disableFutureConfigures
-from armi import meta
 from armi.bookkeeping import tests as bookkeepingTests
 from armi.utils import safeCopy
 
diff --git a/doc/gallery-src/framework/run_chartOfNuclides.py b/doc/gallery-src/framework/run_chartOfNuclides.py
index 13fcfe3ad..f0818d7e4 100644
--- a/doc/gallery-src/framework/run_chartOfNuclides.py
+++ b/doc/gallery-src/framework/run_chartOfNuclides.py
@@ -25,8 +25,8 @@
 """
 import matplotlib.pyplot as plt
 
-from armi.nucDirectory import nuclideBases
 from armi import configure
+from armi.nucDirectory import nuclideBases
 
 configure(permissive=True)
 
diff --git a/doc/gallery-src/framework/run_computeReactionRates.py b/doc/gallery-src/framework/run_computeReactionRates.py
index 1c73f7e37..1a7c2d52b 100644
--- a/doc/gallery-src/framework/run_computeReactionRates.py
+++ b/doc/gallery-src/framework/run_computeReactionRates.py
@@ -26,19 +26,10 @@
 import numpy as np
 
 from armi import configure, nuclideBases, settings
-from armi.materials import ht9
-from armi.materials import sodium
-from armi.materials import uZr
+from armi.materials import ht9, sodium, uZr
 from armi.nuclearDataIO.cccc import isotxs
-from armi.reactor import assemblies
-from armi.reactor import blocks
-from armi.reactor import blueprints
-from armi.reactor import geometry
-from armi.reactor import grids
-from armi.reactor import reactors
-from armi.reactor.components import Circle
-from armi.reactor.components import DerivedShape
-from armi.reactor.components import Hexagon
+from armi.reactor import assemblies, blocks, blueprints, geometry, grids, reactors
+from armi.reactor.components import Circle, DerivedShape, Hexagon
 from armi.reactor.flags import Flags
 from armi.tests import ISOAA_PATH
 
diff --git a/doc/gallery-src/framework/run_fuelManagement.py b/doc/gallery-src/framework/run_fuelManagement.py
index d355bbaf0..a55adcab2 100644
--- a/doc/gallery-src/framework/run_fuelManagement.py
+++ b/doc/gallery-src/framework/run_fuelManagement.py
@@ -30,7 +30,6 @@
 # sphinx_gallery_thumbnail_number = 2
 import math
 
-
 from armi import configure
 from armi.physics.fuelCycle import fuelHandlers
 from armi.reactor.flags import Flags
diff --git a/doc/gallery-src/framework/run_grids1_hex.py b/doc/gallery-src/framework/run_grids1_hex.py
index 7d39ca1f0..c822a91a3 100644
--- a/doc/gallery-src/framework/run_grids1_hex.py
+++ b/doc/gallery-src/framework/run_grids1_hex.py
@@ -22,12 +22,12 @@
 """
 import math
 
-import matplotlib.pyplot as plt
 import matplotlib.patches as mpatches
+import matplotlib.pyplot as plt
 from matplotlib.collections import PatchCollection
 
-from armi.reactor import grids
 from armi import configure
+from armi.reactor import grids
 
 configure(permissive=True)
 
diff --git a/doc/gallery-src/framework/run_isotxs.py b/doc/gallery-src/framework/run_isotxs.py
index b0dbc50fa..095864039 100644
--- a/doc/gallery-src/framework/run_isotxs.py
+++ b/doc/gallery-src/framework/run_isotxs.py
@@ -20,10 +20,10 @@
 """
 import matplotlib.pyplot as plt
 
+from armi import configure
+from armi.nuclearDataIO.cccc import isotxs
 from armi.physics.neutronics import energyGroups
 from armi.tests import ISOAA_PATH
-from armi.nuclearDataIO.cccc import isotxs
-from armi import configure
 
 configure(permissive=True)
 
diff --git a/doc/gallery-src/framework/run_materials.py b/doc/gallery-src/framework/run_materials.py
index bb78d4e8d..ab469f1ae 100644
--- a/doc/gallery-src/framework/run_materials.py
+++ b/doc/gallery-src/framework/run_materials.py
@@ -22,8 +22,8 @@
 
 More info about the materials here: :py:mod:`armi.materials`.
 """
-import numpy as np
 import matplotlib.pyplot as plt
+import numpy as np
 
 from armi import configure, materials
 from armi.nucDirectory import nuclideBases
diff --git a/doc/gallery-src/framework/run_programmaticReactorDefinition.py b/doc/gallery-src/framework/run_programmaticReactorDefinition.py
index e270afeb7..b9c2dce05 100644
--- a/doc/gallery-src/framework/run_programmaticReactorDefinition.py
+++ b/doc/gallery-src/framework/run_programmaticReactorDefinition.py
@@ -37,12 +37,14 @@
 
 from armi import cases
 from armi.reactor import blueprints
-from armi.reactor.blueprints import assemblyBlueprint
-from armi.reactor.blueprints import blockBlueprint
-from armi.reactor.blueprints import componentBlueprint
-from armi.reactor.blueprints import gridBlueprint
-from armi.reactor.blueprints import isotopicOptions
-from armi.reactor.blueprints import reactorBlueprint
+from armi.reactor.blueprints import (
+    assemblyBlueprint,
+    blockBlueprint,
+    componentBlueprint,
+    gridBlueprint,
+    isotopicOptions,
+    reactorBlueprint,
+)
 from armi.settings import caseSettings
 from armi.utils import plotting
 
diff --git a/doc/gallery-src/framework/run_reactorFacemap.py b/doc/gallery-src/framework/run_reactorFacemap.py
index 457aa3f5f..fd29de066 100644
--- a/doc/gallery-src/framework/run_reactorFacemap.py
+++ b/doc/gallery-src/framework/run_reactorFacemap.py
@@ -18,9 +18,9 @@
 Load a test reactor from the test suite and plot a dummy
 power distribution from it. You can plot any block parameter.
 """
+from armi import configure
 from armi.reactor.tests import test_reactors
 from armi.utils import plotting
-from armi import configure
 
 # configure ARMI
 configure(permissive=True)
diff --git a/doc/gallery-src/framework/run_transmutationMatrix.py b/doc/gallery-src/framework/run_transmutationMatrix.py
index 2546c65f1..82e5a2289 100644
--- a/doc/gallery-src/framework/run_transmutationMatrix.py
+++ b/doc/gallery-src/framework/run_transmutationMatrix.py
@@ -29,12 +29,12 @@
 A Bateman equation/matrix exponential solver is required to actually *solve* transmutation and
 decay problems, which can be provided via a plugin.
 """
-import os
 import math
+import os
 
 import matplotlib.patches as mpatch
-from matplotlib.collections import PatchCollection
 import matplotlib.pyplot as plt
+from matplotlib.collections import PatchCollection
 
 from armi.context import RES
 from armi.nucDirectory import nuclideBases
diff --git a/pyproject.toml b/pyproject.toml
index 330094aa1..affae444d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -167,11 +167,12 @@ exclude = [
 [tool.ruff.lint]
 # Enable pycodestyle (E) and Pyflakes (F) codes by default.
 # D - NumPy docstring rules
+# I - Sorting imports
 # N801 - Class name should use CapWords convention
 # SIM - code simplification rules
 # TID - tidy imports
 # TODO: We want to support PLW0603 - don't use the global keyword
-select = ["E", "F", "D", "N801", "SIM", "TID"]
+select = ["D", "E", "F", "I", "N801", "SIM", "TID"]
 
 # Ruff rules we ignore (for now) because they are not 100% automatable
 #