[PyQt] Python 3.5 Type Hints

[Florian Bruhin]

Hi,

Python 3.5 introduced the `typing` module (PEP 484: [1]) for
gradual/optional type checking.

There's also the MyPy checker[2] which seems to start getting
usable to actually run on projects.

For C modules, it requires stub files - here's an example for
lxml.etree: [3]

I think this would be quite useful for PyQt, as most calls to Qt
functions/methods could be type-checked statically with MyPy instead
of raising a TypeError at runtime.

Are there any plans to add such a functionality to sip? If not, I'll
probably attempt to write something based on the XML output, but I got
a bit much on my plate right now :)

Florian

[1] https://www.python.org/dev/peps/pep-0484/
[2] https://github.com/JukkaL/mypy
[3] https://github.com/python/typeshed/blob/master/third_party/3/lxml/etree.pyi

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