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Pull requests: pandas-dev/pandas
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Backport PR #54721 on branch 2.1.x (BUG/WARN: Passing EA object to dtype instead of an instance) ExtensionArray Extending pandas with custom dtypes or arrays. Warnings Warnings that appear or should be added to pandas
Backport PR #54508 on branch 2.1.x (PERF: DataFrame.iloc[int] for EA dtypes) ExtensionArray Extending pandas with custom dtypes or arrays. Indexing Related to indexing on series/frames, not to indexes themselves Performance Memory or execution speed performance
Backport PR #54838 on branch 2.1.x (Don't expose EA.pad_or_backfill to users + switch to DeprecationWarning) ExtensionArray Extending pandas with custom dtypes or arrays.
Backport PR #54800 on branch 2.1.x (ExtensionArray.fillna: start with DeprecationWarning about added copy keyword) ExtensionArray Extending pandas with custom dtypes or arrays.
Backport PR #56616 on branch 2.2.x (BUG: Add limit_area to EA ffill/bfill) Bug ExtensionArray Extending pandas with custom dtypes or arrays. Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
Backport PR #54509 on branch 2.1.x (PERF: Dataframe reductions with EA dtypes) ExtensionArray Extending pandas with custom dtypes or arrays. Performance Memory or execution speed performance Reduction Operations sum, mean, min, max, etc.
Backport PR #54341 on branch 2.1.x (PERF: axis=1 reductions with EA dtypes) ExtensionArray Extending pandas with custom dtypes or arrays. Performance Memory or execution speed performance Reduction Operations sum, mean, min, max, etc.
Backport PR #55347 on branch 2.1.x (BUG: interpolate raising wrong error for ea) ExtensionArray Extending pandas with custom dtypes or arrays. Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
Backport PR #42936 on branch 1.3.x (BUG:Can't calculate quantiles from Int64Dtype Series when results are floats) Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff ExtensionArray Extending pandas with custom dtypes or arrays.
Backport PR #42823 on branch 1.3.x (BUG: Pass copy argument to expanddim constructor in concat.) Copy / view semantics ExtensionArray Extending pandas with custom dtypes or arrays.
REF: fast_xs avoid object dtype ExtensionArray Extending pandas with custom dtypes or arrays. Internals Related to non-user accessible pandas implementation Performance Memory or execution speed performance
Backport PR #42135 on branch 1.3.x (BUG: use hash-function which takes nans correctly into account for ExtensionDtype) ExtensionArray Extending pandas with custom dtypes or arrays. hashing hash_pandas_object Python 3.10
REF: share more ExtensionIndex methods ExtensionArray Extending pandas with custom dtypes or arrays. Index Related to the Index class or subclasses
REF: share ExtensionIndex.insert-> Index.insert ExtensionArray Extending pandas with custom dtypes or arrays. Refactor Internal refactoring of code
ENH: ExtensionArray.insert ExtensionArray Extending pandas with custom dtypes or arrays. Reshaping Concat, Merge/Join, Stack/Unstack, Explode
REF: share MaskedArray reduction methods ExtensionArray Extending pandas with custom dtypes or arrays. Refactor Internal refactoring of code
BUG: DataFrame(EA2D) construction ExtensionArray Extending pandas with custom dtypes or arrays. Reshaping Concat, Merge/Join, Stack/Unstack, Explode
REF: share EABackedBlock.fillna ExtensionArray Extending pandas with custom dtypes or arrays. Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Refactor Internal refactoring of code
REF: use try/except pattern in Block.setitem, EABackedBlock.setitem ExtensionArray Extending pandas with custom dtypes or arrays. Refactor Internal refactoring of code
REF: share NumericArray._arith_method with BooleanArray ExtensionArray Extending pandas with custom dtypes or arrays.
Backport PR #45983 on branch 1.4.x (REGR: drop raising with ea index and duplicates) ExtensionArray Extending pandas with custom dtypes or arrays. Index Related to the Index class or subclasses Regression Functionality that used to work in a prior pandas version
CI: Fix failing tests CI Continuous Integration ExtensionArray Extending pandas with custom dtypes or arrays. Groupby Testing pandas testing functions or related to the test suite
Backport PR #47762 on branch 1.4.x (REGR: preserve reindexed array object (instead of creating new array) for concat with all-NA array) ExtensionArray Extending pandas with custom dtypes or arrays. Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
Backport PR #47762 on branch 1.5.x (REGR: preserve reindexed array object (instead of creating new array) for concat with all-NA array) ExtensionArray Extending pandas with custom dtypes or arrays. Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
Backport PR #31150: API: generalized check_array_indexer for validating array-like getitem indexers ExtensionArray Extending pandas with custom dtypes or arrays. Indexing Related to indexing on series/frames, not to indexes themselves
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