[Windows] scandir returns filenotfound for long paths but os.walk does not
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3.9 (EOL)
OS-windows
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Description
| BPO | 46084 |
|---|---|
| Nosy | @pfmoore, @tjguk, @jkloth, @zware, @serhiy-storchaka, @eryksun, @zooba |
| 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 2021-12-15.14:54:30.143>
labels = ['expert-IO', 'tests', 'OS-windows', 'type-crash', '3.9']
title = 'Python 3.9.6 scan_dir returns filenotfound on long paths, but os_walk does not'
updated_at = <Date 2022-03-21.18:46:36.102>
user = 'https://bugs.python.org/jschwar313'
bugs.python.org fields:
activity = <Date 2022-03-21.18:46:36.102>
actor = 'jkloth'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Tests', 'Windows', 'IO']
creation = <Date 2021-12-15.14:54:30.143>
creator = 'jschwar313'
dependencies = []
files = ['50492', '50493', '50495']
hgrepos = []
issue_num = 46084
keywords = ['patch']
message_count = 13.0
messages = ['408607', '408608', '408617', '408619', '408621', '408623', '408625', '408626', '408632', '408634', '408636', '408643', '408649']
nosy_count = 8.0
nosy_names = ['paul.moore', 'tim.golden', 'jkloth', 'zach.ware', 'serhiy.storchaka', 'eryksun', 'steve.dower', 'jschwar313']
pr_nums = []
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'crash'
url = 'https://bugs.python.org/issue46084'
versions = ['Python 3.9']
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 by running test_dir_scan_dir.py on Windows with the long directory structure described in the issue, then compare its behavior with test_os_walk.py. Inspect the scandir-related path handling and verify that long paths no longer produce FileNotFoundError while os.walk continues to work. Confirm the behavior with a focused regression test.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- operating-systems, testing-qa
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100