[Python-Dev] PEP 484 (Type Hints) -- the next draft is here

Stefan Behnel stefan_ml at behnel.de
Sat Apr 18 07:35:19 CEST 2015


Guido van Rossum schrieb am 17.04.2015 um 23:58:
> The ``typing`` module defines the ``Generator`` type for return values
> of generator functions. It is a subtype of ``Iterable`` and it has
> additional type variables for the type accepted by the ``send()``
> method and the return type of the generator:
> 
> * Generator, used as ``Generator[yield_type, send_type, return_type]``

Is this meant to accept only Python generators, or any kind of object that
implements the coroutine protocol? I'm asking because asyncio currently
suffers from an annoying type check here, so I'd like to avoid that this
problem keeps popping up again in other places.

Stefan




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