python / python/cpython

Error copying an instance of a subclass of OrderedDict

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3.10 stdlib type-feature
Dominant language
Python
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Description

BPO 41751
Nosy @rhettinger, @ericsnowcurrently, @serhiy-storchaka, @erezinman

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 2020-09-09.10:09:46.096>
labels = ['type-feature', 'library', '3.10']
title = 'Error copying an instance of a subclass of OrderedDict'
updated_at = <Date 2020-09-09.17:41:08.906>
user = 'https://github.com/erezinman'

bugs.python.org fields:

activity = <Date 2020-09-09.17:41:08.906>
actor = 'serhiy.storchaka'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2020-09-09.10:09:46.096>
creator = 'erezinman'
dependencies = []
files = []
hgrepos = []
issue_num = 41751
keywords = []
message_count = 10.0
messages = ['376627', '376628', '376630', '376631', '376636', '376637', '376644', '376647', '376648', '376650']
nosy_count = 4.0
nosy_names = ['rhettinger', 'eric.snow', 'serhiy.storchaka', 'erezinman']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue41751'
versions = ['Python 3.10']

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The issue concerns copying instances of OrderedDict subclasses, but names no source file or test. Start by reproducing the reported copy error and locating the relevant OrderedDict implementation and existing copy tests in the Python standard library. Done means the subclass can be copied successfully with a regression test covering the behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
backend
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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