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[3.9] bpo-41249: Fix postponed annotations for TypedDict (GH-27017) #27205

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merged 2 commits into from
Jul 17, 2021

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@Fidget-Spinner Fidget-Spinner commented Jul 17, 2021

This fixes TypedDict to work with get_type_hints and postponed evaluation of annotations across modules.

This is done by adding the module name to ForwardRef at the time the object is created and using that to resolve the globals during the evaluation.

Co-authored-by: Ken Jin 28750310+Fidget-Spinner@users.noreply.github.com
(cherry picked from commit 889036f)

Co-authored-by: Germán Méndez Bravo german.mb@gmail.com

https://bugs.python.org/issue41249

This fixes TypedDict to work with get_type_hints and postponed evaluation of annotations across modules.

This is done by adding the module name to ForwardRef at the time the object is created and using that to resolve the globals during the evaluation.

Co-authored-by: Ken Jin <28750310+Fidget-Spinner@users.noreply.github.com>
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Yeah!

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Oh wait, test_typing failed!

Lib/test/test_typing.py Outdated Show resolved Hide resolved
@ambv ambv merged commit fa674bd into python:3.9 Jul 17, 2021
@Fidget-Spinner Fidget-Spinner deleted the backport-41249-3.9 branch July 17, 2021 09:37
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6 participants