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Pull requests: pandas-dev/pandas
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PERF: cythonizing _concat_date_cols; conversion to float without exceptions in _does_string_look_like_datetime Datetime Datetime data dtype Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Performance Memory or execution speed performance
ENH: fill_value argument for shift #15486 Enhancement Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Reshaping Concat, Merge/Join, Stack/Unstack, Explode
ENH: Add dropna in groupby to allow NaN in keys Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
BUG: DataFrame.groupby(., dropna=True, axis=0) incorrectly throws ShapeError Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
ENH: Implement Kleene logic for BooleanArray ExtensionArray Extending pandas with custom dtypes or arrays. Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
ENH: add NA scalar for missing value indicator, use in StringArray. Enhancement Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
ENH: Enable indexing with nullable Boolean Indexing Related to indexing on series/frames, not to indexes themselves Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate NA - MaskedArrays Related to pd.NA and nullable extension arrays
Cythonized GroupBy Fill Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Performance Memory or execution speed performance
Construction of Series from dict containing NaN as key Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Reshaping Concat, Merge/Join, Stack/Unstack, Explode
Make group_mean compatible with NaT Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
ENH: Add skipna parameter to infer_dtype Enhancement Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
ENH: ExtensionArray.fillna ExtensionArray Extending pandas with custom dtypes or arrays. Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
BUG: support casting from bool array to EA Integer dtype Bug ExtensionArray Extending pandas with custom dtypes or arrays. Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
BUG: fix categorical comparison with missing values (#26504 ) Bug Categorical Categorical Data Type Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
BUG: MultiIndex not dropping nan level and invalid code value Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate MultiIndex
BUG: Fix initialization of DataFrame from dict with NaN as key Dtype Conversions Unexpected or buggy dtype conversions Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
BUG: allow missing values in Index when calling Index.sort_values Bug Index Related to the Index class or subclasses Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
ENH: Added a min_count keyword to stat funcs API Design Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Numeric Operations Arithmetic, Comparison, and Logical operations
BUG: Series.asof fails for all NaN Series (GH15713) Bug Datetime Datetime data dtype Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
Implement NA.__array_ufunc__ ExtensionArray Extending pandas with custom dtypes or arrays. Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Numeric Operations Arithmetic, Comparison, and Logical operations
BUG: rank with +-inf, #6945 Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Numeric Operations Arithmetic, Comparison, and Logical operations Reshaping Concat, Merge/Join, Stack/Unstack, Explode
ENH: Add na_value argument to DataFrame.to_numpy Enhancement ExtensionArray Extending pandas with custom dtypes or arrays. Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
BUG: get_indexer_non_unique with np.datetime64("NaT") and np.timedelta64("NaT") Indexing Related to indexing on series/frames, not to indexes themselves Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
Fix DTI comparison with None, datetime.date Datetime Datetime data dtype Indexing Related to indexing on series/frames, not to indexes themselves Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
BUG: Groupy dropped nan groups from result when grouping over single column Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
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