Backport of string changes for 2.3 release - part 2 #60013
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* REF: avoid copy in StringArray factorize * mypy fixup * un-xfail
* DOC: Add whatsnew for 2.3.0 * fix duplicate label
* BUG (string): str.replace with negative n * update GH ref
* TST (string) fix xfailed groupby tests (3) * TST: non-pyarrow build
Co-authored-by: Joris Van den Bossche <[email protected]>
…v#59678) * TST (string dtype): fix and clean up arrow roundtrip tests * fix using_infer_string
* TST (string): more targeted xfails in test_string.py * Fix no-pyarrow test * Update pandas/tests/extension/test_string.py Co-authored-by: Matthew Roeschke <[email protected]> * Update pandas/tests/extension/test_string.py Co-authored-by: Matthew Roeschke <[email protected]> --------- Co-authored-by: Matthew Roeschke <[email protected]>
* REF: de-duplicate _str_contains * pyright ignore
* String dtype: implement _get_common_dtype * add specific tests * try fix typing * try fix typing * suppress typing error * support numpy 2.0 string * fix typo
…ev#59544) Co-authored-by: Joris Van den Bossche <[email protected]>
Co-authored-by: Joris Van den Bossche <[email protected]>
…ring_array (pandas-dev#59756) * BUG (string dtype): fix inplace mutation with copy=False in ensure_string_array * update
Co-authored-by: Joris Van den Bossche <[email protected]>
…ndas-dev#59768) * BUG/API (string dtype): return float dtype for series[str].rank() * update frame tests * add whatsnew * correct whatsnew note
…ev#59759) * String dtype: fix isin() values handling for python storage * address feedback
…ngine (pandas-dev#59810) String dtype: allow string dtype in query/eval with default mumexpr engine
* String dtype: map builtin str alias to StringDtype * fix tests * fix datetimelike astype and more tests * remove xfails * try fix typing * fix copy_view tests * fix remaining tests with infer_string enabled * ignore typing issue for now * move to common.py * simplify Categorical._str_get_dummies * small cleanup * fix ensure_string_array to not modify extension arrays inplace * fix ensure_string_array once more + fix is_extension_array_dtype for str * still xfail TestArrowArray::test_astype_str when not using infer_string * ensure maybe_convert_objects copies object dtype input array when inferring StringDtype * update test_1d_object_array_does_not_copy test * update constructor copy test + do not copy in maybe_convert_objects? * skip str.get_dummies test for now * use pandas_dtype() instead of registry.find * fix corner cases for calling pandas_dtype * add TODO comment in ensure_string_array
…andas-dev#59854) * String dtype: allow string dtype for non-raw apply with numba engine * remove xfails * clean-up
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Follow-up on #59513, with a second set of backports