pando85 / aiofunctools

Python functools for async!

aiofunctools

Library to help in Python functional programing. It’s asyncio compatible.

Basic idea behind it is Railway Oriented Programing.

This allows us to:

• simplify our code.
• improve error management.
• be cool! be functional!

Examples:

Old code example:

async def create_user_handler(request) -> Response:
    try:
        user = check_valid_user(request)
        create_user(user)
    except InvalidBody:
        return_422('Invalid body')
    except UserAlreadyExists:
        return_409('User already exists')
    return_201(user)

ROP example:

async def create_user_handler(request) -> Response:
    return await compose(
        check_valid_user,
        create_user,
        return_201
    )(request)