Type Hints

[JonathanWenger]

All internal classes and methods should have type hints (https://docs.python.org/3/library/typing.html). This prevents pesky type bugs.

Example method with a str type hint:

def greeting(name: str) -> str:
    return 'Hello ' + name

[pnkraemer]

Only the internal ones? Why not all visible ones? I would find it hard to distinguish purely internal functions from purely public functions but maybe I am not trying hard enough :)

[JonathanWenger]

Closing as this is now standard practice when accepting PRs and no longer an active TODO.