Assigning and deleting __new__ attr on the class does not allow to create instances of this class

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Bewertung

Schwierigkeit
4/5
Geschätzter Aufwand
3-5 Tage
Anfängerfreundlichkeit
35/100
Issue-Typ
Bug
Klarheit
Muss geklärt werden
Aktivitätsstatus
Ruhig
Tech-Stack
python
Bereich
compilers

Rechercherichtung

Start by reproducing the behavior from the attached new_patch_fails.py file on the affected Python versions, comparing Python 2.7 with Python 3.5 as described. Then trace the interpreter-core handling of assigning and deleting a class's new attribute. Done means the reported class can be instantiated after that sequence without the TypeError, with regression coverage for the behavior.

Vom Indexierungsmodell aus dem Issue-Text verfasst.

Beschreibung

3.10 3.8 (EOL) 3.9 (EOL) interpreter-core type-bug
BPO 25731
Nosy @Yhg1s, @benjaminp, @eryksun, @skonieczny
Files
  • new_patch_fails.py: Attached file works on python 2.7, but fails on python3.5 with TypeError: object() takes no parameters.
    		•

    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 2015-11-25.12:29:50.304>
labels = ['interpreter-core', 'type-bug', '3.8', '3.9', '3.10']
title = 'Assigning and deleting __new__ attr on the class does not allow to create instances of this class'
updated_at = <Date 2021-03-05.12:14:47.716>
user = 'https://github.com/skonieczny'

    bugs.python.org fields:

    activity = <Date 2021-03-05.12:14:47.716>
actor = 'eryksun'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Interpreter Core']
creation = <Date 2015-11-25.12:29:50.304>
creator = 'uosiu'
dependencies = []
files = ['41161']
hgrepos = []
issue_num = 25731
keywords = []
message_count = 10.0
messages = ['255337', '255371', '258530', '258572', '262922', '263580', '263816', '266574', '266576', '278962']
nosy_count = 8.0
nosy_names = ['twouters', 'benjamin.peterson', 'python-dev', 'bkabrda', 'eryksun', 'uosiu', 'jcristau', 'Carl Dunham']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue25731'
versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']

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