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Backport PR #60615: TST(string dtype): Resolve some HDF5 xfails IO HDF5 read_hdf, HDFStore Strings String extension data type and string data
[backport 2.3.x] TST (string dtype): update all tests in tests/frame/indexing (#60193) Strings String extension data type and string data Testing pandas testing functions or related to the test suite
[backport 2.3.x] BUG (string dtype): let fillna with invalid value upcast to object dtype (#60296) Strings String extension data type and string data
[backport 2.3.x] BUG (string dtype): replace with non-string to fall back to object dtype (#60285) Strings String extension data type and string data
[backport 2.3.x] TST (string dtype): resolve all easy xfails in pandas/tests/groupby (#60314) Groupby Strings String extension data type and string data
Backport PR #60312 on branch 2.3.x (TST (string dtype): resolve xfails in pandas/tests/apply + raise TypeError for ArrowArray accumulate) Strings String extension data type and string data Testing pandas testing functions or related to the test suite
Backport PR #60713: TST(string dtype): Resolve xfail in test_base.py Copy / view semantics ExtensionArray Extending pandas with custom dtypes or arrays. Strings String extension data type and string data Testing pandas testing functions or related to the test suite
[backport 2.3.x] TST(string dtype): Resolve xfail when grouping by nan column (#60712) Strings String extension data type and string data
[backport 2.3.x] API(str dtype): Raise on StringDtype for unary op + (#60710) Strings String extension data type and string data
BUG: case argument ignored when regex is False in Series.str.replace Bug Strings String extension data type and string data
Backport PR #60318 on branch 2.3.x (TST (string dtype): resolve all xfails in JSON IO tests) IO JSON read_json, to_json, json_normalize Strings String extension data type and string data Testing pandas testing functions or related to the test suite
[backport 2.3.x] TST (string dtype): fix groupby xfails with using_infer_string + update error message (#59430) Groupby Strings String extension data type and string data Testing pandas testing functions or related to the test suite
[backport 2.3.x] BUG (string dtype): correctly enable idxmin/max for python-storage strings (#60242) Strings String extension data type and string data Testing pandas testing functions or related to the test suite
[backport 2.3.x] ENH: Enable pytables to round-trip with StringDtype (#60663) Strings String extension data type and string data
[ArrowStringArray] TST: parametrize str.partition tests Strings String extension data type and string data Testing pandas testing functions or related to the test suite
Backport PR #60940: ENH: Add dtype argument to str.decode Enhancement Strings String extension data type and string data
CLN: changed .format to f string in construction.py, dtypes/base.py, and dtypes/cast.py Code Style Code style, linting, code_checks Strings String extension data type and string data
REGR: Fix casting of None to str during astype Regression Functionality that used to work in a prior pandas version Strings String extension data type and string data
[ArrowStringArray] REF: pre-cursor to adding replace str accessor method Refactor Internal refactoring of code Strings String extension data type and string data
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ProTip! Updated in the last three days: updated:>2025-11-28.