dataclasses.asdict() incorrectly calls deepcopy() on values.

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#89,298 opened on Sep 8, 2021 3 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 3/5
Estimated time: 1-2 days
Newbie friendliness: 35/100

Issue type: Bug
Clarity: Needs clarification
Activity status: Stale
Tech stack: python
Domain: backend

Research direction

Locate the dataclasses.asdict() entry point in the standard-library implementation and reproduce the behavior with a value defining deepcopy(). Inspect the existing dataclasses tests and confirm that the completed change prevents the incorrect deepcopy() call.

Written by the indexing model from the issue text.

Description

stdlib type-bug

BPO	45135
Nosy	@ericvsmith

^{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 2021-09-08.09:18:41.799>
labels = ['type-bug', 'library']
title = 'dataclasses.asdict() incorrectly calls __deepcopy__() on values.'
updated_at = <Date 2021-09-08.17:39:37.031>
user = 'https://bugs.python.org/tfish2'

bugs.python.org fields:

activity = <Date 2021-09-08.17:39:37.031>
actor = 'tfish2'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2021-09-08.09:18:41.799>
creator = 'tfish2'
dependencies = []
files = []
hgrepos = []
issue_num = 45135
keywords = []
message_count = 3.0
messages = ['401360', '401393', '401418']
nosy_count = 2.0
nosy_names = ['eric.smith', 'tfish2']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue45135'
versions = []

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dataclasses.asdict() incorrectly calls __deepcopy__() on values.