fix: keep freeze_time across Process on Python 3.14#600
Open
l46983284-cpu wants to merge 1 commit into
Open
Conversation
Python 3.14's Linux default start method no longer inherits freezegun patches into child processes (issue spulec#593). Prefer fork on Unix while frozen and re-apply patches after_in_child as a belt-and-suspenders. Signed-off-by: Alex Chen <l46983284@gmail.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Summary
On Python 3.14 Linux,
multiprocessingno longer defaults to a start method that inherits freezegun patches intoProcesschildren (issue #593).While time is frozen, prefer
forkon Unix and re-apply freezegun patches inos.register_at_fork(after_in_child=...).Test plan
pytest tests/test_multiprocess_freeze.pyPASS on 3.14.4 after patchFixes #593