python / python/cpython

Exception in AsyncMock side_effect cases incorrect refcount

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3.9 (EOL) stdlib type-bug
Dominant language
Python
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Avg merge
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Merged PRs (30d)
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Description

BPO 44410
Nosy @asvetlov, @1st1, @Penlect

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 2021-06-13.14:52:01.808>
labels = ['type-bug', '3.9', 'expert-asyncio']
title = 'Exception in AsyncMock side_effect cases incorrect refcount'
updated_at = <Date 2021-06-13.14:52:01.808>
user = 'https://github.com/Penlect'

bugs.python.org fields:

activity = <Date 2021-06-13.14:52:01.808>
actor = 'penlect'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['asyncio']
creation = <Date 2021-06-13.14:52:01.808>
creator = 'penlect'
dependencies = []
files = []
hgrepos = []
issue_num = 44410
keywords = []
message_count = 1.0
messages = ['395752']
nosy_count = 3.0
nosy_names = ['asvetlov', 'yselivanov', 'penlect']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue44410'
versions = ['Python 3.9']

Contributor guide

Open the contributing guide

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

Start with the linked BPO issue 44410 and inspect the AsyncMock side_effect behavior in the asyncio-related implementation and tests. Reproduce the exception cases and trace their reference counts; done means the affected cases maintain correct reference counts.

Written by the indexing model from the issue text.

Assessment

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

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