[PR #13815/e95a843a backport][9.0.x] fix(testing): pytest.approx correctly take account Mapping keys order to compare them#14142
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nicoddemus merged 1 commit into9.0.xfrom Jan 25, 2026
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…pare them (#13815) This fixes an issue with `pytest.approx` where the error message incorrectly reported all elements as mismatched when comparing mappings with different key orders, even when only some values differed. The original code paired values by position rather than by key. This caused incorrect mismatch reporting when dictionary keys were in different orders. Fixes #12444 (cherry picked from commit e95a843)
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This is a backport of PR #13815 as merged into main (e95a843).
Hello,
This PR fixes an issue with
pytest.approxwhere the error message incorrectly reported all elements as mismatched when comparing mappings with different key orders, even when only some values differed.The original code paired values by position rather than by key. This caused incorrect mismatch reporting when dictionary keys were in different orders.
This closes #12444.
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changelogfolder, named<ISSUE NUMBER>.<TYPE>.rst.