Issue 45088: Coroutines & async generators disagree on the iteration protocol semantics

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This issue has been migrated to GitHub: https://github.com/python/cpython/issues/89251

classification

Title:	Coroutines & async generators disagree on the iteration protocol semantics
Type:	behavior	Stage:	needs patch
Components:	Interpreter Core	Versions:	Python 3.11, Python 3.10

process

Status:	open	Resolution:
Dependencies:		Superseder:
Assigned To:		Nosy List:	gvanrossum, lukasz.langa, pablogsal, yselivanov
Priority:	normal	Keywords:

Created on 2021-09-02 20:32 by yselivanov, last changed 2022-04-11 14:59 by admin.

Messages (1)
msg400951 - (view)	Author: Yury Selivanov (yselivanov) *	Date: 2021-09-02 20:32
See this script: https://gist.github.com/1st1/eccc32991dc2798f3fa0b4050ae2461d Somehow an identity async function alters the behavior of manual iteration though the wrapped nested generator. This is a very subtle bug and I'm not even sure if this is a bug or not. Opening the issue so that I don't forget about this and debug sometime later.

msg400951 - (view)

Author: Yury Selivanov (yselivanov) * (Python committer)

Date: 2021-09-02 20:32

See this script:

  https://gist.github.com/1st1/eccc32991dc2798f3fa0b4050ae2461d

Somehow an identity async function alters the behavior of manual iteration though the wrapped nested generator.

This is a very subtle bug and I'm not even sure if this is a bug or not. Opening the issue so that I don't forget about this and debug sometime later.

History
Date	User	Action	Args
2022-04-11 14:59:49	admin	set	github: 89251
2021-09-03 03:26:08	yselivanov	set	nosy: + gvanrossum
2021-09-02 20:32:30	yselivanov	create