argparse: 'resolve' conflict handler damages the actions of the parent parser

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
38/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
python
Domain
cli, testing

Research direction

Start by reviewing the historical sample3.py and patch_1.diff linked in the issue, then locate the current argparse conflict-resolution implementation and its tests. Reproduce the parent-parser behavior described in the title and verify that resolving a conflict no longer damages the parent actions, with regression coverage for the case.

Written by the indexing model from the issue text.

Description

docs stdlib tests type-bug
BPO 22401
Files
  • sample3.py
  • patch_1.diff
    		•

    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 2014-09-14.05:46:38.711>
labels = ['tests', 'type-bug', 'library', 'docs']
title = "argparse: 'resolve' conflict handler damages the actions of the parent parser"
updated_at = <Date 2021-01-27.18:49:22.288>
user = 'https://bugs.python.org/paulj3'

    bugs.python.org fields:

    activity = <Date 2021-01-27.18:49:22.288>
actor = 'kcwu'
assignee = 'docs@python'
closed = False
closed_date = None
closer = None
components = ['Documentation', 'Library (Lib)', 'Tests']
creation = <Date 2014-09-14.05:46:38.711>
creator = 'paul.j3'
dependencies = []
files = ['36728', '36773']
hgrepos = []
issue_num = 22401
keywords = ['patch']
message_count = 8.0
messages = ['226862', '226982', '228137', '262314', '262318', '262365', '262366', '262373']
nosy_count = 5.0
nosy_names = ['bethard', 'kcwu', 'docs@python', 'paul.j3', 'deckar01']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue22401'
versions = ['Python 2.7', 'Python 3.5']

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