os.path.realpath() normalizes paths before resolving links on Windows

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
python
Domain
operating-systems

Research direction

Start with the attached realpath_posixly.py reproduction and the os.path.realpath() behavior described in the title. Locate the Windows path-resolution implementation and existing tests, then verify that coverage captures the reported ordering and that the corrected behavior passes.

Written by the indexing model from the issue text.

Description

3.10 3.11 3.8 (EOL) 3.9 (EOL) OS-windows stdlib
BPO 43936
Nosy @pfmoore, @tjguk, @zware, @eryksun, @zooba, @barneygale
Files
  • realpath_posixly.py
    		•

    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 2021-04-24.21:22:05.977>
labels = ['3.8', '3.9', '3.10', '3.11', 'library', 'OS-windows']
title = 'os.path.realpath() normalizes paths before resolving links on Windows'
updated_at = <Date 2021-04-26.02:11:50.432>
user = 'https://github.com/barneygale'

    bugs.python.org fields:

    activity = <Date 2021-04-26.02:11:50.432>
actor = 'eryksun'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)', 'Windows']
creation = <Date 2021-04-24.21:22:05.977>
creator = 'barneygale'
dependencies = []
files = ['49984']
hgrepos = []
issue_num = 43936
keywords = []
message_count = 2.0
messages = ['391804', '391875']
nosy_count = 6.0
nosy_names = ['paul.moore', 'tim.golden', 'zach.ware', 'eryksun', 'steve.dower', 'barneygale']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue43936'
versions = ['Python 3.8', 'Python 3.9', 'Python 3.10', 'Python 3.11']

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