Discussion on: Write Unbreakable Python

[Nikita Sobolev]

Thanks a lot for this article!

Consider using returns library. It has several most useful monads like Maybe, Result, IO, IOResult, Reader, and their combinations.

The main feature of this library is that it is fully typed with mypy. So, mypy will check that you are writing correct code before even running it.

We also have beginner-friendly docs, so it would easy to teach your team to use it.

dry-python / returns

Make your functions return something meaningful, typed, and safe!

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Make your functions return something meaningful, typed, and safe!

Features

• Provides a bunch of primitives to write declarative business logic
• Enforces better architecture
• Fully typed with annotations and checked with mypy, PEP561 compatible
• Has a bunch of helpers for better composition
• Pythonic and pleasant to write and to read 🐍
• Support functions and coroutines, framework agnostic
• Easy to start: has lots of docs, tests, and tutorials

Installation

pip install returns

You might also want to configure mypy correctly and install our plugin to fix this existing issue:

# In setup.cfg or mypy.ini:
[mypy]
plugins =
  returns.contrib.mypy.decorator_plugin

We also recommend to use the same mypy settings we use.

Make sure you know how to get started, check out our docs!

Contents

• Maybe container that allows you to write None-free code
• RequiresContext container that allows you to use typed functional dependency injection
• Result container that let's you…

View on GitHub

[Jesse Warden]

Dude, that library is awesome. The annotations + automatic lifting of types is great!
I'll never be a fan of Python's TypeScript/Java inline typing style, ML/Haskell made me a fan of their way, but overall, I'm loving what I'm seeing in returns, thanks a lot for the share.

[Nikita Sobolev]

Thanks! I am open for any feedback from your side.

[Jesse Warden]

Keep creating stuff like that? Save the planet?