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GH-83863: Drop support for using pathlib.Path objects as context managers#104807

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barneygale merged 2 commits into
python:mainfrom
barneygale:gh-83863-remove-pathlib-context-manager
May 23, 2023
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GH-83863: Drop support for using pathlib.Path objects as context managers#104807
barneygale merged 2 commits into
python:mainfrom
barneygale:gh-83863-remove-pathlib-context-manager

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@barneygale

@barneygale barneygale commented May 23, 2023 •
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In Python 3.8 and prior, pathlib.Path.__exit__() marked a path as closed; some subsequent attempts to perform I/O would raise an IOError. This functionality was never documented, and had the effect of making Path objects mutable, contrary to PEP 428. In Python 3.9 we made __exit__() a no-op, and in 3.11 __enter__() began raising deprecation warnings. Here we remove both methods.

@barneygale
pythonGH-83863: Drop support for using pathlib.Path objects as cont… …
04d568a 
…ext managers

In Python 3.8 and prior, `pathlib.Path.__exit__()` marked a path as closed;
some subsequent attempts to perform I/O would raise an IOError. This
functionality was never documented, and had the effect of making `Path`
objects mutable, contrary to PEP 428. In Python 3.9 we made `__exit__()` a
no-op, and in 3.11 `__enter__()` began raising deprecation warnings. Here
we remove both methods.
@bedevere-bot bedevere-bot mentioned this pull request May 23, 2023
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AlexWaygood
AlexWaygood reviewed May 23, 2023
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Hooray! Maybe worth an entry in "what's new in 3.13"?

@barneygale

barneygale commented May 23, 2023

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Thanks Alex!

@barneygale barneygale enabled auto-merge (squash) May 23, 2023 22:17
@barneygale barneygale merged commit 6b1510c into python:main May 23, 2023
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bedevere-bot commented May 23, 2023

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⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot s390x SLES 3.x has failed when building commit 6b1510c.

What do you need to do:

  1. Don't panic.
  2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
  3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/540/builds/5391) and take a look at the build logs.
  4. Check if the failure is related to this commit (6b1510c) or if it is a false positive.
  5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/540/builds/5391

Failed tests:

  • test_threading

Summary of the results of the build (if available):

== Tests result: FAILURE then ENV CHANGED ==

445 tests OK.

10 slowest tests:

  • test_concurrent_futures: 2 min 24 sec
  • test_tools: 2 min 10 sec
  • test_multiprocessing_spawn: 1 min 59 sec
  • test_math: 1 min 30 sec
  • test_multiprocessing_forkserver: 1 min 22 sec
  • test_signal: 1 min 11 sec
  • test_multiprocessing_fork: 1 min 5 sec
  • test_capi: 1 min 1 sec
  • test_gdb: 43.2 sec
  • test_io: 36.8 sec

1 test altered the execution environment:
test_socketserver

19 tests skipped:
test.test_asyncio.test_windows_events
test.test_asyncio.test_windows_utils test_devpoll test_ioctl
test_kqueue test_launcher test_msilib test_nis test_peg_generator
test_perf_profiler test_startfile test_tix test_tkinter test_ttk
test_winconsoleio test_winreg test_winsound test_wmi
test_zipfile64

1 re-run test:
test_threading

Total duration: 6 min 41 sec

Click to see traceback logs 
remote: Enumerating objects: 26, done.        
remote: Counting objects:   3% (1/26)        
remote: Counting objects:   7% (2/26)        
remote: Counting objects:  11% (3/26)        
remote: Counting objects:  15% (4/26)        
remote: Counting objects:  19% (5/26)        
remote: Counting objects:  23% (6/26)        
remote: Counting objects:  26% (7/26)        
remote: Counting objects:  30% (8/26)        
remote: Counting objects:  34% (9/26)        
remote: Counting objects:  38% (10/26)        
remote: Counting objects:  42% (11/26)        
remote: Counting objects:  46% (12/26)        
remote: Counting objects:  50% (13/26)        
remote: Counting objects:  53% (14/26)        
remote: Counting objects:  57% (15/26)        
remote: Counting objects:  61% (16/26)        
remote: Counting objects:  65% (17/26)        
remote: Counting objects:  69% (18/26)        
remote: Counting objects:  73% (19/26)        
remote: Counting objects:  76% (20/26)        
remote: Counting objects:  80% (21/26)        
remote: Counting objects:  84% (22/26)        
remote: Counting objects:  88% (23/26)        
remote: Counting objects:  92% (24/26)        
remote: Counting objects:  96% (25/26)        
remote: Counting objects: 100% (26/26)        
remote: Counting objects: 100% (26/26), done.        
remote: Compressing objects:  10% (1/10)        
remote: Compressing objects:  20% (2/10)        
remote: Compressing objects:  30% (3/10)        
remote: Compressing objects:  40% (4/10)        
remote: Compressing objects:  50% (5/10)        
remote: Compressing objects:  60% (6/10)        
remote: Compressing objects:  70% (7/10)        
remote: Compressing objects:  80% (8/10)        
remote: Compressing objects:  90% (9/10)        
remote: Compressing objects: 100% (10/10)        
remote: Compressing objects: 100% (10/10), done.        
remote: Total 14 (delta 12), reused 5 (delta 4), pack-reused 0        
From https://github.com/python/cpython
 * branch                  main       -> FETCH_HEAD
Note: switching to '6b1510cf11c16c8e4381810c15ceeda6f89e79f4'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at 6b1510cf11 GH-83863: Drop support for using `pathlib.Path` objects as context managers (GH-104807)
Switched to and reset branch 'main'

./configure: line 8401: -reorder-blocks=ext-tsp: command not found

make: *** [Makefile:2008: buildbottest] Error 3

@lukaskontenis lukaskontenis mentioned this pull request Jan 2, 2026
Merged
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@barneygale @bedevere-bot @AlexWaygood