python / python/cpython

Python os.listdir fails with FileNotFoundError when directory exists

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3.7 (EOL) OS-windows type-bug
Dominant language
Python
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Description

BPO 36243
Nosy @pfmoore, @tjguk, @stevendaprano, @zware, @zooba, @iritkatriel

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 2019-03-08.17:22:58.871>
labels = ['type-bug', '3.7', 'OS-windows']
title = 'Python os.listdir fails with FileNotFoundError when directory exists'
updated_at = <Date 2021-06-23.17:35:57.380>
user = 'https://bugs.python.org/GeoffAlexander'

bugs.python.org fields:

activity = <Date 2021-06-23.17:35:57.380>
actor = 'iritkatriel'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Windows']
creation = <Date 2019-03-08.17:22:58.871>
creator = 'Geoff.Alexander'
dependencies = []
files = []
hgrepos = []
issue_num = 36243
keywords = []
message_count = 4.0
messages = ['337516', '337552', '337559', '396435']
nosy_count = 7.0
nosy_names = ['paul.moore', 'tim.golden', 'steven.daprano', 'zach.ware', 'steve.dower', 'Geoff.Alexander', 'iritkatriel']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue36243'
versions = ['Python 3.7']

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 at the os.listdir entry point and reproduce the FileNotFoundError on Windows with a directory that exists. The issue names no source file or test, so identify the relevant implementation and regression-test location before deciding the change. Done means the reported existing-directory case behaves correctly without breaking other Windows behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
operating-systems
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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