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Pull requests: pandas-dev/pandas
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ENH: make DataFrame.applymap uses the .map method of ExtensionArrays Apply Apply, Aggregate, Transform, Map ExtensionArray Extending pandas with custom dtypes or arrays.
REF: Add ExtensionArray.map ExtensionArray Extending pandas with custom dtypes or arrays.
#51809 by topper-123 was merged Mar 13, 2023 Loading…
1 task done
BUG: DataFrame.stack losing EA dtypes with multi-columns and mixed dtypes Bug ExtensionArray Extending pandas with custom dtypes or arrays. Reshaping Concat, Merge/Join, Stack/Unstack, Explode
PERF: DataFrame.where for EA dtype mask ExtensionArray Extending pandas with custom dtypes or arrays. Performance Memory or execution speed performance
PERF: DataFrame.first_valid_index/last_valid_index for EA dtypes ExtensionArray Extending pandas with custom dtypes or arrays. Performance Memory or execution speed performance
BUG: Series.corr/cov raising with masked dtype Bug ExtensionArray Extending pandas with custom dtypes or arrays.
ENH: EA._hash_pandas_object ExtensionArray Extending pandas with custom dtypes or arrays. hashing hash_pandas_object
BUG: ensure reindex / getitem to select columns properly copies data for extension dtypes Bug Copy / view semantics ExtensionArray Extending pandas with custom dtypes or arrays.
BUG: pd.array failing to raise with DataFrame ExtensionArray Extending pandas with custom dtypes or arrays.
REF: let EAs override WrappedCythonOp groupby implementations ExtensionArray Extending pandas with custom dtypes or arrays. Groupby
BUG: to_coo raising Systemerror for EA Categorical Categorical Data Type ExtensionArray Extending pandas with custom dtypes or arrays. MultiIndex Sparse Sparse Data Type
DOC: fixed register_extension_dtype import statement ExtensionArray Extending pandas with custom dtypes or arrays.
BUG: to_numpy for PandasArray does not handle na_value Dtype Conversions Unexpected or buggy dtype conversions ExtensionArray Extending pandas with custom dtypes or arrays.
ENH: Include column for ea comparison in asserters ExtensionArray Extending pandas with custom dtypes or arrays. Testing pandas testing functions or related to the test suite
PERF: ExtensionBlock.fillna dispatch to underlying arrays Arrow pyarrow functionality ExtensionArray Extending pandas with custom dtypes or arrays. Performance Memory or execution speed performance
#50078 by lukemanley was merged Dec 8, 2022 Loading…
4 tasks done
BUG: Series(nullable).tolist() -> numpy scalars Bug ExtensionArray Extending pandas with custom dtypes or arrays.
PERF: BaseMaskedArray.__iter__ ExtensionArray Extending pandas with custom dtypes or arrays. Performance Memory or execution speed performance
PERF: Series.fillna for pyarrow-backed dtypes Arrow pyarrow functionality ExtensionArray Extending pandas with custom dtypes or arrays. Performance Memory or execution speed performance
PERF: pd.concat EA-backed indexes and sort=True ExtensionArray Extending pandas with custom dtypes or arrays. Index Related to the Index class or subclasses Performance Memory or execution speed performance Reshaping Concat, Merge/Join, Stack/Unstack, Explode
PERF: pd.concat with EA-backed indexes ExtensionArray Extending pandas with custom dtypes or arrays. Performance Memory or execution speed performance Reshaping Concat, Merge/Join, Stack/Unstack, Explode
BUG: preserve EA in pd.array Constructors Series/DataFrame/Index/pd.array Constructors ExtensionArray Extending pandas with custom dtypes or arrays.
BUG/PERF: MultiIndex.difference losing EA dtype ExtensionArray Extending pandas with custom dtypes or arrays. MultiIndex Performance Memory or execution speed performance
#48722 by lukemanley was closed Sep 23, 2022 Loading…
4 tasks done
BUG: is_datetime64tz_dtype shortcut only for DatetimeTZDtype Dtype Conversions Unexpected or buggy dtype conversions ExtensionArray Extending pandas with custom dtypes or arrays. Timezones Timezone data dtype
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 1.5.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
ProTip! What’s not been updated in a month: updated:<2025-11-02.