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Backport PR #62179 on branch 2.3.x (DOC: Add change in .values to the string migration guide) Docs Strings String extension data type and string data
DOC: Add change in .values to the string migration guide Docs Strings String extension data type and string data
DEPR: .str accessor with object dtype Deprecate Functionality to remove in pandas Mothballed Temporarily-closed PR the author plans to return to Strings String extension data type and string data
#62159 by jbrockmendel was closed Sep 25, 2025 Loading…
3 of 5 tasks
Backport PR #62147 on branch 2.3.x (DOC: correct and rewrite string migration section on astype(str)) Docs Strings String extension data type and string data
DOC: correct and rewrite string migration section on astype(str) Docs Strings String extension data type and string data
Switch default string storage from python to pyarrow (if installed) also for NA-variant of the StringDtype NA - MaskedArrays Related to pd.NA and nullable extension arrays Strings String extension data type and string data
BUG/DEPR: logical operation with bool and string Numeric Operations Arithmetic, Comparison, and Logical operations Strings String extension data type and string data
BUG: fix Series.str.fullmatch() and Series.str.match() with a compiled regex failing with arrow strings Arrow pyarrow functionality Strings String extension data type and string data
BUG: fix .str.isdigit to honor unicode superscript for older pyarrow Arrow pyarrow functionality Strings String extension data type and string data
DOC: update .str.contains/match/startswith docstring examples for default behaviour Docs Strings String extension data type and string data
CI: enable doctest errors again + fixup categorical examples CI Continuous Integration Docs Strings String extension data type and string data
CI: properly enable the string dtype also for custom CI builds CI Continuous Integration Strings String extension data type and string data
DOC: fix doctests for datetimelike.py files for the new string dtype Docs Strings String extension data type and string data
BUG: fix fill value for gouped sum in case of unobserved categories for string dtype (empty string instead of 0) Bug Groupby Strings String extension data type and string data
DOC: fix doctests for pandas/core/base.py for new string dtype Docs Strings String extension data type and string data
BUG: fix to_json() with JSON Table Schema work correctly with string dtype Bug IO JSON read_json, to_json, json_normalize Strings String extension data type and string data
Output formatting: preserve quoting for string categories Categorical Categorical Data Type Output-Formatting __repr__ of pandas objects, to_string Strings String extension data type and string data
DOC: fix doctests for string dtype changes (top-level) Docs Strings String extension data type and string data
Backport PR #61705 on branch 2.3.x (DOC: add pandas 3.0 migration guide for the string dtype) Docs Strings String extension data type and string data
Backport PR #61770 on branch 2.3.x (BUG: Fix unpickling of string dtypes of legacy pandas versions) Bug IO Pickle read_pickle, to_pickle Strings String extension data type and string data
BUG[string]: incorrect index downcast in DataFrame.join Strings String extension data type and string data
TST (string dtype): resolve skip in misc test_memory_usage Strings String extension data type and string data
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