multiprocessing.Queue.get(block=False) can raise queue.Empty on non-empty queue
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3.10
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stdlib
topic-multiprocessing
type-bug
- Dominant language
- Python
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- 77.2k
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- Avg merge
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- Merged PRs (30d)
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Description
| BPO | 43136 |
|---|---|
| Nosy | @sbraz, @JulienPalard |
| Files |
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 2021-02-05.12:03:06.227>
labels = ['type-bug', '3.8', '3.9', '3.10', '3.7', 'library']
title = 'multiprocessing.Queue.get(block=False) can raise queue.Empty on non-empty queue'
updated_at = <Date 2021-02-05.15:20:21.144>
user = 'https://github.com/sbraz'
bugs.python.org fields:
activity = <Date 2021-02-05.15:20:21.144>
actor = 'mdk'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2021-02-05.12:03:06.227>
creator = 'sbraz'
dependencies = []
files = ['49791']
hgrepos = []
issue_num = 43136
keywords = []
message_count = 2.0
messages = ['386525', '386528']
nosy_count = 2.0
nosy_names = ['sbraz', 'mdk']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue43136'
versions = ['Python 3.6', 'Python 3.7', 'Python 3.8', 'Python 3.9', 'Python 3.10']
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the linked queue_test.py reproduction and inspect multiprocessing.Queue.get(block=False) in the Python library implementation. Confirm the behavior with the existing test setup, then define done as ensuring a non-empty queue does not incorrectly raise queue.Empty while preserving the non-blocking behavior.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100