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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
REF: Implement EA._mode, de-special-case categorical/dtlike Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff ExtensionArray Extending pandas with custom dtypes or arrays.
ENH: EA._hasnans, EADtype.empty API - Consistency Internal Consistency of API/Behavior ExtensionArray Extending pandas with custom dtypes or arrays.
ENH: allow JSON (de)serialization of ExtensionDtypes Enhancement ExtensionArray Extending pandas with custom dtypes or arrays. IO JSON read_json, to_json, json_normalize
BUG: df.iloc[ndarray, ndarray] = 2dvals raising with EA column Bug ExtensionArray Extending pandas with custom dtypes or arrays. Indexing Related to indexing on series/frames, not to indexes themselves
BUG: handle NaNs in FloatingArray.equals ExtensionArray Extending pandas with custom dtypes or arrays.
BUG: Series.replace(method='pad') with EA dtypes Bug ExtensionArray Extending pandas with custom dtypes or arrays. Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
ENH: implement EA._where API - Consistency Internal Consistency of API/Behavior ExtensionArray Extending pandas with custom dtypes or arrays.
TST: tests using invalid_scalar fixture Error Reporting Incorrect or improved errors from pandas ExtensionArray Extending pandas with custom dtypes or arrays.
REF: de-duplicate MaskedArray tests ExtensionArray Extending pandas with custom dtypes or arrays. NA - MaskedArrays Related to pd.NA and nullable extension arrays Testing pandas testing functions or related to the test suite
Fix str dtype -> IntegerDtype conversions Dtype Conversions Unexpected or buggy dtype conversions ExtensionArray Extending pandas with custom dtypes or arrays. Strings String extension data type and string data
ENH: allow storing ExtensionArrays in Index ExtensionArray Extending pandas with custom dtypes or arrays. Index Related to the Index class or subclasses
ENH: implement ExtensionArray.__array_ufunc__ Compat pandas objects compatability with Numpy or Python functions ExtensionArray Extending pandas with custom dtypes or arrays.
TYP: ExtensionArray.take accept np.ndarray ExtensionArray Extending pandas with custom dtypes or arrays. Typing type annotations, mypy/pyright type checking
Backport PR #43152 on branch 1.3.x (BUG: Outer/right merge with EA dtypes cast to object) Bug ExtensionArray Extending pandas with custom dtypes or arrays. Reshaping Concat, Merge/Join, Stack/Unstack, Explode
TST: added test for ea dtypes conversion to datetimetzdtype (GH37553) Dtype Conversions Unexpected or buggy dtype conversions ExtensionArray Extending pandas with custom dtypes or arrays. Testing pandas testing functions or related to the test suite Timezones Timezone data dtype
BUG: Outer/right merge with EA dtypes cast to object Bug ExtensionArray Extending pandas with custom dtypes or arrays. Reshaping Concat, Merge/Join, Stack/Unstack, Explode
BUG: Pass copy argument to expanddim constructor in concat. Copy / view semantics ExtensionArray Extending pandas with custom dtypes or arrays.
API: EA._can_hold_na -> EDtype.can_hold_na API Design Blocker Blocking issue or pull request for an upcoming release ExtensionArray Extending pandas with custom dtypes or arrays.
REF: convert_dtypes return dtype objects Dtype Conversions Unexpected or buggy dtype conversions ExtensionArray Extending pandas with custom dtypes or arrays.
BUG: replace with regex raising for StringDType Bug ExtensionArray Extending pandas with custom dtypes or arrays. replace replace method Strings String extension data type and string data
TYP: ExtensionArray unique and repeat ExtensionArray Extending pandas with custom dtypes or arrays. Typing type annotations, mypy/pyright type checking
TYP: Typing for ExtensionArray.__getitem__ ExtensionArray Extending pandas with custom dtypes or arrays. Typing type annotations, mypy/pyright type checking
TYP: Simple type fixes for ExtensionArray ExtensionArray Extending pandas with custom dtypes or arrays. Typing type annotations, mypy/pyright type checking
TYP: Fix typing in ExtensionDtype registry ExtensionArray Extending pandas with custom dtypes or arrays. Typing type annotations, mypy/pyright type checking
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