[issue44806] Subclassing Protocol get different __init__

[Łukasz Langa]

Change by Łukasz Langa :


--
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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[issue44806] Subclassing Protocol get different __init__

[miss-islington]

miss-islington  added the comment:


New changeset 2cc19a5463c804b2f39b94de896d55dcb57a364c by Miss Islington (bot) 
in branch '3.10':
bpo-44806: Fix __init__ in subclasses of protocols (GH-27545)
https://github.com/python/cpython/commit/2cc19a5463c804b2f39b94de896d55dcb57a364c


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[issue44806] Subclassing Protocol get different __init__

[Łukasz Langa]

Łukasz Langa  added the comment:


New changeset 0f6a7739df0055b5c6abe2180f1be97ea4da87b7 by Miss Islington (bot) 
in branch '3.9':
bpo-44806: Fix __init__ in subclasses of protocols (GH-27545) (GH-27559)
https://github.com/python/cpython/commit/0f6a7739df0055b5c6abe2180f1be97ea4da87b7


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[issue44806] Subclassing Protocol get different __init__

[Yurii Karabas]

Change by Yurii Karabas <1998uri...@gmail.com>:


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pull_requests: +26068
pull_request: https://github.com/python/cpython/pull/27543

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[issue44806] Subclassing Protocol get different __init__

[Łukasz Langa]

Łukasz Langa  added the comment:


New changeset 043cd60abed09edddc7185bcf7d039771acc734d by Serhiy Storchaka in 
branch 'main':
bpo-44806: Fix __init__ in subclasses of protocols (GH-27545)
https://github.com/python/cpython/commit/043cd60abed09edddc7185bcf7d039771acc734d


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nosy: +lukasz.langa

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[issue44806] Subclassing Protocol get different __init__

[miss-islington]

Change by miss-islington :


--
pull_requests: +26065
pull_request: https://github.com/python/cpython/pull/27559

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[issue44806] Subclassing Protocol get different __init__

[miss-islington]

Change by miss-islington :


--
nosy: +miss-islington
nosy_count: 3.0 -> 4.0
pull_requests: +26064
pull_request: https://github.com/python/cpython/pull/27558

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[issue44806] Subclassing Protocol get different __init__

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

There is other related case:

>>> from typing import *
>>> class P(Protocol): pass
... 
>>> class B:
... def __init__(self):
... self.test = 'OK'
... 
>>> class D(P, B):
... pass
... 
>>> D().test
Traceback (most recent call last):
  File "", line 1, in 
AttributeError: 'D' object has no attribute 'test'

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[issue44806] Subclassing Protocol get different __init__

[Serhiy Storchaka]

Change by Serhiy Storchaka :


--
pull_requests: +26054
pull_request: https://github.com/python/cpython/pull/27545

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[issue44806] Subclassing Protocol get different __init__

[Yurii Karabas]

Change by Yurii Karabas <1998uri...@gmail.com>:


--
keywords: +patch
pull_requests: +26050
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/27541

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[issue44806] Subclassing Protocol get different __init__

[Serhiy Storchaka]

Change by Serhiy Storchaka :


--
nosy: +serhiy.storchaka
versions: +Python 3.10, Python 3.9

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[issue44806] Subclassing Protocol get different __init__

[Yurii Karabas]

New submission from Yurii Karabas <1998uri...@gmail.com>:

When we subclassing Protocol, we get a __init__ differing from default one but 
the protocol in question didn't define any __init__.

More information can be found here - https://github.com/python/typing/issues/644

--
components: Library (Lib)
messages: 398736
nosy: kj, uriyyo
priority: normal
severity: normal
status: open
title: Subclassing Protocol get different __init__
type: behavior
versions: Python 3.11

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