bpo-39682: make `pathlib.Path` immutable by removing (undocumented) support for "closing" a path by using it as a context manager #18846

barneygale · 2020-03-08T10:09:20Z

This implements @pitrou's suggestion of retaining support for using a Path object as a context manager, but making it a no-op.

https://bugs.python.org/issue39682

the-knights-who-say-ni · 2020-03-08T10:09:23Z

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pitrou

+1 on the principle, but I don't think we should remove the test entirely, just change it.
Also, please add a NEWS entry. You can do so using blurb or blurb-it.

Lib/test/test_pathlib.py

bedevere-bot · 2020-03-08T10:31:06Z

A Python core developer has requested some changes be made to your pull request before we can consider merging it. If you could please address their requests along with any other requests in other reviews from core developers that would be appreciated.

Once you have made the requested changes, please leave a comment on this pull request containing the phrase I have made the requested changes; please review again. I will then notify any core developers who have left a review that you're ready for them to take another look at this pull request.

barneygale · 2020-03-08T11:02:33Z

I have made the requested changes; please review again. Thank you!

bedevere-bot · 2020-03-08T11:02:36Z

Thanks for making the requested changes!

@pitrou: please review the changes made to this pull request.

pitrou

+1. Have you signed the CLA?

barneygale · 2020-03-08T11:19:51Z

I have! I think it's just making its way through the system currently.

pitrou · 2020-03-08T11:21:32Z

Cool, thank you. I'll wait for the bot to notice, then :-)

brettcannon

Quick request to document in the code why this change is being made, else someone else in the future may be wondering why it's a no-op.

Lib/test/test_pathlib.py

Lib/pathlib.py

Misc/NEWS.d/next/Library/2020-03-08-11-00-01.bpo-39682.AxXZNz.rst

bedevere-bot · 2020-03-09T21:57:33Z

A Python core developer has requested some changes be made to your pull request before we can consider merging it. If you could please address their requests along with any other requests in other reviews from core developers that would be appreciated.

Once you have made the requested changes, please leave a comment on this pull request containing the phrase I have made the requested changes; please review again. I will then notify any core developers who have left a review that you're ready for them to take another look at this pull request.

barneygale · 2020-03-10T00:07:12Z

Thank you Brett. I have made the requested changes; please review again. Hope the comment isn't too long.

bedevere-bot · 2020-03-10T00:07:16Z

Thanks for making the requested changes!

@brettcannon, @pitrou: please review the changes made to this pull request.

bedevere-bot · 2020-03-10T19:05:43Z

A Python core developer has requested some changes be made to your pull request before we can consider merging it. If you could please address their requests along with any other requests in other reviews from core developers that would be appreciated.

Once you have made the requested changes, please leave a comment on this pull request containing the phrase I have made the requested changes; please review again. I will then notify any core developers who have left a review that you're ready for them to take another look at this pull request.

barneygale · 2020-03-21T01:51:06Z

I have made the requested changes; please review again.

bedevere-bot · 2020-03-21T01:51:10Z

Thanks for making the requested changes!

@pitrou, @brettcannon: please review the changes made to this pull request.

Lib/pathlib.py

pitrou

+1 for this, thank you @barneygale .
I'll leave this open a day or two in case people hold strong opinions about deprecating this silent behaviour.

pitrou · 2020-03-28T09:39:18Z

@barneygale Can you rebase/merge from master to re-run CI on this?

…upport for "closing" a path by using it as a context manager. Support for using a path as a context manager remains, and is now a no-op. Co-Authored-By: Brett Cannon <54418+brettcannon@users.noreply.github.com>

barneygale · 2020-03-29T20:16:44Z

Rebased on master. Thanks @pitrou and @brettcannon for helping get this through :)

Misc/NEWS.d/next/Library/2020-03-08-11-00-01.bpo-39682.AxXZNz.rst

Co-Authored-By: Kyle Stanley <aeros167@gmail.com>

aeros

Thanks @barneygale; LGTM.

brettcannon · 2020-03-30T20:22:23Z

I have an opinion about deprecation, but it isn't strong. 😄 Basically I'm worried someone out there is relying on this functionality and is going to be caught off-guard that it suddenly stopped working. But as I said, I'm +0 on the deprecation so I won't hold up the PR if people disagree.

barneygale · 2020-04-03T17:50:44Z

Just noting that I have a follow-up PR - #19342 - that removes the _init() method that was touched by this PR.

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bpo-39682: make pathlib.Path immutable by removing (undocumented) s…

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…upport for "closing" a path by using it as a context manager. Support for using a path as a context manager remains, and is now a no-op. Co-Authored-By: Brett Cannon <54418+brettcannon@users.noreply.github.com>

barneygale force-pushed the bpo-39682-pathlib-path-context-manager branch from ca3acfd to 31c116a Compare March 29, 2020 19:34

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Update Misc/NEWS.d/next/Library/2020-03-08-11-00-01.bpo-39682.AxXZNz.rst

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Co-Authored-By: Kyle Stanley <aeros167@gmail.com>

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pitrou merged commit 00002e6 into python:master Apr 1, 2020

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barneygale mentioned this pull request Apr 3, 2020

bpo-40038: pathlib: remove partial support for preserving accessor when modifying a path #19342

Merged

barneygale mannequin mentioned this pull request Apr 10, 2022

pathlib.Path objects can be used as context managers #83863

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04d4 mentioned this pull request Jul 4, 2025

Tikrinant spintos versiją metama error atviriduomenys/spinta#986

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bpo-39682: make `pathlib.Path` immutable by removing (undocumented) support for "closing" a path by using it as a context manager #18846

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bpo-39682: make `pathlib.Path` immutable by removing (undocumented) support for "closing" a path by using it as a context manager #18846

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