[Python-Dev] PEP 484: difference between tuple and () (original) (raw)
Jelle Zijlstra jelle.zijlstra at gmail.com
Wed Nov 8 17:26:54 EST 2017
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2017-11-08 14:01 GMT-08:00 Jean-Patrick Francoia < jeanpatrick.francoia at gmail.com>:
This is my first post on this list, so please don't kill me if I ask it in the wrong place, or if the question is stupid.
I asked this question on Stack Overflow already: https://stackoverflow.com/questions/47163048/python- annotations-difference-between-tuple-and In very short, which form is correct ? def func() -> Tuple[int, int]
But this requires to import the typing module. Or this (doesn't crash): def func() -> (int, int): The former is correct. Type checkers should reject the second one. But because type checking in Python is through static analysis, either will work at runtime—you need to run a separate static analysis tool like mypy or pytype to find type errors in your code.
Also, python-dev is a mailing list for the development of Python, not for questions about Python. The Gitter chatroom at https://gitter.im/python/typing and the typing issue tracker at https://github.com/python/typing are better places for questions about typing in Python.
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