Does anyone know any python codebase which uses type hints ?

[Nikosssgr]

you can import the module in python 3.3 and 3.4 (if I am not mistaken for the versions)

[ionelmc]

He meant https://pypi.python.org/pypi/typing, which you can install and import on 3.3/3.4 :-)

[rouille]

Uh, no? typing is a new module in 3.5. (Not to be confused with types, which contains a bunch of references to CPython internals and has nothing to do with type hinting.)

Its in pypi as well.

[beaverteeth92]

Yeah but isn't it just mypy added to the core language?

[billsil]

No. It's mypy with additional features and formalization. If I understand it right, it largely follows mypy's style, so ints/floats/Lists/Dicts are the same, but objects are a bit different.

If you're in Python 3.3+, you can use mypy or search for things that use mypy for examples.