python / python/cpython

os.path.realpath() unexpected breaking change: resolves subst'd paths to real paths

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3.8 (EOL) OS-windows stdlib type-bug
Dominant language
Python
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Forks
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PR merge metrics
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Description

BPO 43968
Nosy @pfmoore, @tjguk, @zware, @eryksun, @zooba

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 2021-04-28.16:26:16.087>
labels = ['3.8', 'type-bug', 'library', 'OS-windows']
title = "os.path.realpath() unexpected breaking change: resolves subst'd paths to real paths"
updated_at = <Date 2021-05-02.20:10:57.243>
user = 'https://bugs.python.org/sfmc'

bugs.python.org fields:

activity = <Date 2021-05-02.20:10:57.243>
actor = 'sfmc'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)', 'Windows']
creation = <Date 2021-04-28.16:26:16.087>
creator = 'sfmc'
dependencies = []
files = []
hgrepos = []
issue_num = 43968
keywords = []
message_count = 9.0
messages = ['392234', '392278', '392357', '392390', '392487', '392497', '392510', '392700', '392718']
nosy_count = 6.0
nosy_names = ['paul.moore', 'tim.golden', 'zach.ware', 'eryksun', 'steve.dower', 'sfmc']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue43968'
versions = ['Python 3.8']

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 os.path.realpath() entry point and reproduce the reported behavior on Windows using a subst'd path. Read the linked BPO discussion to determine the intended behavior and review the existing test coverage; done means the behavior is clarified and the appropriate regression coverage or fix is agreed upon.

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
35/100

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