gh-129483: Make TestLocalTimeDisambiguation's time format locale independent

[gkirchou]

Test with:

./configure --enable-optimizations --with-lto
make -s -j $(nproc);

• Issue: Python 3.13.1 test_datetime failures #129483

[StanFromIreland]

IMO making the tests locale independent would be a better solution than this (i.e. just replace %c with our desired order).

[gkirchou]

IMO making the tests locale independent would be a better solution than this (i.e. just replace %c with our desired order).

Addressed

[StanFromIreland]

LGTM, thanks!

[python-cla-bot]

All commit authors signed the Contributor License Agreement.

[vstinner]

LGTM

[pganssle]

This is failing in 3.13, right? So we should backport it? Anyone know how far back it is causing issues?

[miss-islington-app]

Thanks @gkirchou for the PR, and @pganssle for merging it 🌮🎉.. I'm working now to backport this PR to: 3.14.
🐍🍒⛏🤖

[bedevere-app]

GH-142258 is a backport of this pull request to the 3.14 branch.

[miss-islington-app]

Thanks @gkirchou for the PR, and @pganssle for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13.
🐍🍒⛏🤖

[bedevere-app]

GH-142259 is a backport of this pull request to the 3.13 branch.

[vstinner]

This is failing in 3.13, right? So we should backport it? Anyone know how far back it is causing issues?

Right, the issue was reported on Python 3.13.1. We should backport the change to 3.13 and 3.14 branches. Other branches no longer accept bugfixes.

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot s390x Fedora Stable LTO + PGO 3.13 (tier-3) has failed when building commit e68066e.

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/#/builders/1633/builds/552) and take a look at the build logs.
4. Check if the failure is related to this commit (e68066e) 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/#/builders/1633/builds/552

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

Click to see traceback logs

remote: Enumerating objects: 5, done. remote: Counting objects: 20% (1/5) remote: Counting objects: 40% (2/5) remote: Counting objects: 60% (3/5) remote: Counting objects: 80% (4/5) remote: Counting objects: 100% (5/5) remote: Counting objects: 100% (5/5), done. remote: Total 5 (delta 4), reused 4 (delta 4), pack-reused 0 (from 0) 
From https://github.com/python/cpython
* branch 3.13 -> FETCH_HEAD
Note: switching to 'e68066eb0957f5cad8e8959ea8f3f681bfda0994'.
You are in 'detached HEAD' state. You can look around, make experimental
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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:
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Or undo this operation with:
git switch -
Turn off this advice by setting config variable advice.detachedHead to false
HEAD is now at e68066eb095 [3.13] gh-129483: Make `TestLocalTimeDisambiguation`'s time format locale independent (GH-142193) (#142259)
Switched to and reset branch '3.13'
find: ‘build’: No such file or directoryfind: ‘build’: No such file or directoryfind: ‘build’: No such file or directoryfind: ‘build’: No such file or directorymake[2]: [Makefile:3127: clean-retain-profile] Error 1 (ignored)
In function ‘hashtable_key_from_2_strings’,
inlined from ‘_extensions_cache_find_unlocked’ at Python/import.c:1264:17:
Python/import.c:1177:5: warning: ‘strncpy’ output truncated before terminating nul copying as many bytes from a string as its length [-Wstringop-truncation]
1177 | strncpy(key, str1_data, str1_len);
|^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Python/import.c:1163:27: note: length computed here
1163 | Py_ssize_t str1_len = strlen(str1_data);
|^~~~~~~~~~~~~~~~~
test_denial_of_service_prevented_int_to_str (test.test_int.IntStrDigitLimitsTests.test_denial_of_service_prevented_int_to_str)
Regression test: ensure we fail before performing O(N**2) work. ... ok
test_denial_of_service_prevented_str_to_int (test.test_int.IntStrDigitLimitsTests.test_denial_of_service_prevented_str_to_int)
Regression test: ensure we fail before performing O(N**2) work. ... ok
test_disabled_limit (test.test_int.IntStrDigitLimitsTests.test_disabled_limit) ... ok
test_int_from_other_bases (test.test_int.IntStrDigitLimitsTests.test_int_from_other_bases) ... ok
test_int_max_str_digits_is_per_interpreter (test.test_int.IntStrDigitLimitsTests.test_int_max_str_digits_is_per_interpreter) ... ok
test_max_str_digits (test.test_int.IntStrDigitLimitsTests.test_max_str_digits) ... ok
test_max_str_digits_edge_cases (test.test_int.IntStrDigitLimitsTests.test_max_str_digits_edge_cases)
Ignore the +/- sign and space padding. ... ok
test_power_of_two_bases_unlimited (test.test_int.IntStrDigitLimitsTests.test_power_of_two_bases_unlimited)
The limit does not apply to power of 2 bases. ... ok
test_sign_not_counted (test.test_int.IntStrDigitLimitsTests.test_sign_not_counted) ... ok
test_underscores_ignored (test.test_int.IntStrDigitLimitsTests.test_underscores_ignored) ... ok
test_denial_of_service_prevented_int_to_str (test.test_int.IntSubclassStrDigitLimitsTests.test_denial_of_service_prevented_int_to_str)
Regression test: ensure we fail before performing O(N**2) work. ... ok
test_denial_of_service_prevented_str_to_int (test.test_int.IntSubclassStrDigitLimitsTests.test_denial_of_service_prevented_str_to_int)
Regression test: ensure we fail before performing O(N**2) work. ... FAIL
test_disabled_limit (test.test_int.IntSubclassStrDigitLimitsTests.test_disabled_limit) ... ok
test_int_from_other_bases (test.test_int.IntSubclassStrDigitLimitsTests.test_int_from_other_bases) ... ok
test_int_max_str_digits_is_per_interpreter (test.test_int.IntSubclassStrDigitLimitsTests.test_int_max_str_digits_is_per_interpreter) ... ok
test_max_str_digits (test.test_int.IntSubclassStrDigitLimitsTests.test_max_str_digits) ... ok
test_max_str_digits_edge_cases (test.test_int.IntSubclassStrDigitLimitsTests.test_max_str_digits_edge_cases)
Ignore the +/- sign and space padding. ... ok
test_power_of_two_bases_unlimited (test.test_int.IntSubclassStrDigitLimitsTests.test_power_of_two_bases_unlimited)
The limit does not apply to power of 2 bases. ... ok
test_sign_not_counted (test.test_int.IntSubclassStrDigitLimitsTests.test_sign_not_counted) ... ok
test_underscores_ignored (test.test_int.IntSubclassStrDigitLimitsTests.test_underscores_ignored) ... ok
test_basic (test.test_int.IntTestCases.test_basic) ... ok
test_error_message (test.test_int.IntTestCases.test_error_message) ... ok
test_int_base_bad_types (test.test_int.IntTestCases.test_int_base_bad_types)
Not integer types are not valid bases; issue16772. ... ok
test_int_base_indexable (test.test_int.IntTestCases.test_int_base_indexable) ... ok
test_int_base_limits (test.test_int.IntTestCases.test_int_base_limits)
Testing the supported limits of the int() base parameter. ... ok
test_int_memoryview (test.test_int.IntTestCases.test_int_memoryview) ... ok
test_int_returns_int_subclass (test.test_int.IntTestCases.test_int_returns_int_subclass) ... ok
test_int_subclass_with_index (test.test_int.IntTestCases.test_int_subclass_with_index) ... ok
test_int_subclass_with_int (test.test_int.IntTestCases.test_int_subclass_with_int) ... ok
test_intconversion (test.test_int.IntTestCases.test_intconversion) ... ok
test_invalid_signs (test.test_int.IntTestCases.test_invalid_signs) ... ok
test_issue31619 (test.test_int.IntTestCases.test_issue31619) ... ok
test_keyword_args (test.test_int.IntTestCases.test_keyword_args) ... ok
test_no_args (test.test_int.IntTestCases.test_no_args) ... ok
test_non_numeric_input_types (test.test_int.IntTestCases.test_non_numeric_input_types) ... ok
test_small_ints (test.test_int.IntTestCases.test_small_ints) ... ok
test_string_float (test.test_int.IntTestCases.test_string_float) ... ok
test_underscores (test.test_int.IntTestCases.test_underscores) ... ok
test_unicode (test.test_int.IntTestCases.test_unicode) ... ok
test_pylong_int_divmod (test.test_int.PyLongModuleTests.test_pylong_int_divmod) ... ok
test_pylong_int_to_decimal (test.test_int.PyLongModuleTests.test_pylong_int_to_decimal) ... ok
test_pylong_int_to_decimal_2 (test.test_int.PyLongModuleTests.test_pylong_int_to_decimal_2) ... skipped "resource 'cpu' is not enabled"
test_pylong_misbehavior_error_path_from_str (test.test_int.PyLongModuleTests.test_pylong_misbehavior_error_path_from_str) ... ok
test_pylong_misbehavior_error_path_to_str (test.test_int.PyLongModuleTests.test_pylong_misbehavior_error_path_to_str) ... ok
test_pylong_roundtrip (test.test_int.PyLongModuleTests.test_pylong_roundtrip) ... ok
test_pylong_str_to_int (test.test_int.PyLongModuleTests.test_pylong_str_to_int) ... ok
======================================================================
FAIL: test_denial_of_service_prevented_str_to_int (test.test_int.IntSubclassStrDigitLimitsTests.test_denial_of_service_prevented_str_to_int)
Regression test: ensure we fail before performing O(N**2) work.
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/buildbot/buildarea/3.13.cstratak-fedora-stable-s390x.lto-pgo/build/Lib/test/test_int.py", line 740, in test_denial_of_service_prevented_str_to_intself.assertLessEqual(sw_fail_extra_huge.seconds, sw_convert.seconds/2)
~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^AssertionError: 0.09443029399999858 not less than or equal to 0.022935383500000128
----------------------------------------------------------------------
Ran 46 tests in 1.140s
FAILED (failures=1, skipped=1)
test test_int failed
make: *** [Makefile:906: profile-run-stamp] Error 2