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abc conflicts with __init_subclass__ #87993

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vladhoi mannequin opened this issue Apr 13, 2021 · 3 comments
Closed

abc conflicts with __init_subclass__ #87993

vladhoi mannequin opened this issue Apr 13, 2021 · 3 comments
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3.8 only security fixes extension-modules C modules in the Modules dir type-bug An unexpected behavior, bug, or error

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@vladhoi
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Mannequin

vladhoi mannequin commented Apr 13, 2021

BPO 43827
Nosy @rhettinger, @pganssle, @vladhoi, @arhadthedev
PRs
  • bpo-43827: Fixed abc conflicts with __init_subclass__ #25385
    		•

    Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

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    GitHub fields:

    assignee = None
closed_at = None
created_at = <Date 2021-04-13.07:57:15.219>
labels = ['extension-modules', 'type-bug', '3.8']
title = 'abc conflicts with __init_subclass__'
updated_at = <Date 2021-11-21.12:10:32.102>
user = 'https://github.com/vladhoi'

    bugs.python.org fields:

    activity = <Date 2021-11-21.12:10:32.102>
actor = 'arhadthedev'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Extension Modules']
creation = <Date 2021-04-13.07:57:15.219>
creator = 'vladhoi'
dependencies = []
files = []
hgrepos = []
issue_num = 43827
keywords = ['patch']
message_count = 2.0
messages = ['390933', '406713']
nosy_count = 5.0
nosy_names = ['rhettinger', 'stutzbach', 'p-ganssle', 'vladhoi', 'arhadthedev']
pr_nums = ['25385']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue43827'
versions = ['Python 3.8']
    @vladhoi
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    vladhoi mannequin commented Apr 13, 2021 

    from abc import ABC


class A:
    def __init_subclass__(self):
        pass


class B(ABC, A, name="name"):
    pass

    After initialising class B, this exception occurs, because multiple "name" arguments where provided:

    Traceback (most recent call last):
  File "test_abc", line 9, in <module>
    class B(ABC, A, name="name"):
TypeError: __new__() got multiple values for argument 'name'

    @vladhoi vladhoi mannequin added type-crash A hard crash of the interpreter, possibly with a core dump 3.8 only security fixes extension-modules C modules in the Modules dir labels Apr 13, 2021
    @terryjreedy terryjreedy added type-bug An unexpected behavior, bug, or error and removed type-crash A hard crash of the interpreter, possibly with a core dump labels Apr 16, 2021
    @arhadthedev
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    Paul, PR OP made all changes requested; could you re-review please?

    @ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
    MarkKoz added a commit to csun-comp430-s22/lispy that referenced this issue Apr 30, 2022
    @MarkKoz
    Parser: fix kwarg name conflict with ABCMeta
    c58036b 
    See python/cpython#87993
    @JelleZijlstra
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    Thanks for your contribution!

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