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The encapsulation library

Introducing: the From class. For maintainable data pipelines.

• Adds new syntactic sugar to python!
• Cleanly abstract side-effects without interrupting control flow
• Elegant decorators included
• Decorate any function with @to(From) to make it monadic
• Explicit function composition
• Currently implemented: Maybe
• Coming soon: Result, IO

Installation

pip install -e encapsulation

Getting started

Get started by

from encapsulation.base import Maybe

Maybe("a") + "b" # outputs <Maybe val=(ab)>
Maybe(None) * 2 # outputs <Nothing val=(None)>

Easy to use decorators that elevate functions to return wrapped values instead:

from encapsulation.base import Maybe, to

def add1(n: int):
    return n + 1

@to(Maybe)
def test(s: int):
    return s

test(1) << add1 & print << add1 # prints '2', while returning Maybe(3)

You can chain computations using compose(). For example

from encapsulation.base import Just, compose

@to(Just[int])
def add2(s: int):
    return s + 2

compose(Just(1), add2, add2) # equals Just(5)