8000 Enum: ensure bitwise operators on subclasses are correct · Issue #90635 · python/cpython · GitHub
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ethanfurman opened this issue Jan 23, 2022 · 2 comments
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Enum: ensure bitwise operators on subclasses are correct #90635

ethanfurman opened this issue Jan 23, 2022 · 2 comments
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3.11 only security fixes type-bug An unexpected behavior, bug, or error

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BPO 46477
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  • bpo-46477: [Enum] ensure Flag subclasses have correct bitwise methods #30816
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    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 = 'https://github.com/ethanfurman'
closed_at = None
created_at = <Date 2022-01-23.00:37:08.664>
labels = ['type-bug', '3.11']
title = 'Enum: ensure bitwise operators on subclasses are correct'
updated_at = <Date 2022-01-23.02:27:57.589>
user = 'https://github.com/ethanfurman'

    bugs.python.org fields:

    activity = <Date 2022-01-23.02:27:57.589>
actor = 'ethan.furman'
assignee = 'ethan.furman'
closed = False
closed_date = None
closer = None
components = []
creation = <Date 2022-01-23.00:37:08.664>
creator = 'ethan.furman'
dependencies = []
files = []
hgrepos = []
issue_num = 46477
keywords = ['patch']
message_count = 2.0
messages = ['411319', '411333']
nosy_count = 1.0
nosy_names = ['ethan.furman']
pr_nums = ['30816']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue46477'
versions = ['Python 3.11']
    @ethanfurman
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    Creating one's own int Flag type doesn't work properly with regards to the bitwise operators:

        class MyIntFlag(int, Flag):
        ONE = 1
        TWO = 2
        FOUR = 4
    MyIntFlag.ONE | MyIntFlag.TWO
# <MyIntFlag.ONE|TWO: 3>

MyIntFlag.ONE | 2
# 3

    @ethanfurman ethanfurman added the 3.11 only security fixes label Jan 23, 2022
    @ethanfurman ethanfurman self-assigned this Jan 23, 2022
    @ethanfurman ethanfurman added type-bug An unexpected behavior, bug, or error 3.11 only security fixes labels Jan 23, 2022
    @ethanfurman ethanfurman self-assigned this Jan 23, 2022
    @ethanfurman ethanfurman added the type-bug An unexpected behavior, bug, or error label Jan 23, 2022
    @ethanfurman
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    New changeset 353e3b2 by Ethan Furman in branch 'main':
    bpo-46477: [Enum] ensure Flag subclasses have correct bitwise methods (GH-30816)
    353e3b2

    @ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
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