From 9e9816144419b35905f31218b900253045030597 Mon Sep 17 00:00:00 2001
From: Jakob Gamper <97gamjak@gmail.com>
Date: Sun, 12 May 2024 10:09:37 +0200
Subject: [PATCH] everything setup up with logger and runtime typechecking

---
 PQAnalysis/traj/trajectory.py | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/PQAnalysis/traj/trajectory.py b/PQAnalysis/traj/trajectory.py
index 8ccbfc50..4a994616 100644
--- a/PQAnalysis/traj/trajectory.py
+++ b/PQAnalysis/traj/trajectory.py
@@ -9,7 +9,7 @@
 
 from PQAnalysis.topology import Topology
 from PQAnalysis.types import Np2DNumberArray, Np1DNumberArray
-from PQAnalysis.exceptions import PQIndexError
+from PQAnalysis.exceptions import PQIndexError, PQTypeError
 from PQAnalysis.core import Cell
 from PQAnalysis.atomic_system import AtomicSystem
 from PQAnalysis.utils.custom_logging import setup_logger
@@ -309,7 +309,6 @@ def __contains__(self, item: AtomicSystem) -> bool:
         """
         return item in self.frames
 
-    @runtime_type_checking
     def __add__(self, other: "Trajectory") -> "Trajectory":
         """
         This method allows two trajectories to be added together.
@@ -320,6 +319,12 @@ def __add__(self, other: "Trajectory") -> "Trajectory":
             The other trajectory to add.
         """
 
+        if not isinstance(other, Trajectory):
+            self.logger.error(
+                "Only Trajectory objects can be added to a Trajectory.",
+                exception=PQTypeError,
+            )
+
         return Trajectory(self.frames + other.frames)
 
     def __eq__(self, other: Any) -> bool: