Document pathlib with_segments duck typing for path object arguments
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Description
Some pathlib methods use the presence of a with_segments attribute to decide whether an argument is already a path object.
This behavior was changed in gh-128520 / GH-130199 for Python 3.14. The main pathlib reference documents PurePath.with_segments(), but it does not currently mention that methods such as PurePath.match() and Path.rename() use with_segments as this duck-typed marker.
This can surprise authors of path-like or path-adjacent classes that define with_segments without implementing os.PathLike. The docs should describe the current behavior so subclass and third-party path authors have a clear contract to work from.
Linked PRs
- gh-153394
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 in the main pathlib reference at the PurePath.with_segments() documentation and review the references to PurePath.match() and Path.rename(). Document that the presence of with_segments is used as a duck-typed path-object marker, including the implication for path-like and path-adjacent classes; confirm the rendered documentation explains the current Python 3.14 behavior.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- documentation
- Issue type
- Documentation
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 30/100