[New-bugs-announce] [issue31700] one-argument version for Generator.typing

Sebastian Rittau report at bugs.python.org
Thu Oct 5 04:35:17 EDT 2017

New submission from Sebastian Rittau <srittau at rittau.biz>:

Currently typing.Generator requires three arguments: Generator[YieldType, SendType, ReturnType].

At least for me, passing values to a generator is a very rare case. I suggest to allow only one argument to be passed to Generator: Generator[YieldType], where the other arguments default to None. This makes the common case more readable and is less error-prone. (I always forget the second and third argument, since that use case is so uncommon for me.)

messages: 303748
nosy: srittau
priority: normal
severity: normal
status: open
title: one-argument version for Generator.typing
versions: Python 3.7

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