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[Python-Dev] Question about PEP 484

2018-07-16 10:21 GMT-07:00 Adam Cataldo via Python-Dev <
python-dev at python.org>:

> *Hi Folks,Cc: Rebecca, pytypeThis is Adam Cataldo; I?m the engineering
> manager for the Python team at Google. Rebecca Chen, our lead pytype
> <https://github.com/google/pytype> contributor, and I are interested in
> helping finalize PEP 484 if possible. To that end, we wanted to find out
> what technical issues the PEP 484 authors feel they still need to finalize.
> We also wanted to know how we can help.We have a large Python code base at
> Google, and may be able to use this to help resolve current incomplete
> definitions, by collecting data on how types are used. We also have a
> couple ambiguities that we?d love to get closure on: - One thing we care
> about in particular, given the implementation of pytype, is the detailed
> definition of what goes in a .pyi file. Do folks think this makes sense to
> include as part of PEP 484, or would this be better in a separate PEP? We?d
> love to get your thoughts.*

I would be happy to contribute to this if that would be useful for type
checkers like pytype, although like Guido I don't think the current text of
the PEP is ambiguous. Typeshed already has a set of lint rules that limit
what can be put in stub files, but it could be useful to communicate the
exact set of allowed constructs.

> * - The relationship between unicode and typing.Text in Python 2 has been
> a recurring source of confusion for our users. Especially since we
> contributed <https://github.com/python/peps/pull/302> to the current state
> of affairs, we?d like to figure out how to establish clarity here.*
There has already been a long discussion on the typing issue tracker that
resulted in no consensus for any change to the current recommendation.
Perhaps there is something we can do, but it's not clear to me what that
would be.

> *Thoughts?Thanks,Adam*
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