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Pull requests: pandas-dev/pandas
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CLN: Simplify factorize Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Clean
PERF: Performance improvement value_counts for masked arrays Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Constructors Series/DataFrame/Index/pd.array Constructors NA - MaskedArrays Related to pd.NA and nullable extension arrays Performance Memory or execution speed performance Series Series data structure
ENH: Support mask in duplicated algorithm Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff duplicated duplicated, drop_duplicates NA - MaskedArrays Related to pd.NA and nullable extension arrays
Value counts base Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Enhancement Numeric Operations Arithmetic, Comparison, and Logical operations
#9355 by hayd was closed May 9, 2015 Loading… updated Oct 13, 2022
WIP: add multi-multi index support to join Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#8898 by thorwhalen was closed May 9, 2015 Loading… updated Oct 13, 2022
ENH: Numerically stable Cython functions Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Numeric Operations Arithmetic, Comparison, and Logical operations
roll_cov and roll_corr Algos #8326 by jaimefrio was closed May 9, 2015 Loading… updated Oct 13, 2022
Backport PR #48785 on branch 1.5.x (BUG: still emitting unnecessary FutureWarning in DataFrame.sort_values with sparse columns) Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Warnings Warnings that appear or should be added to pandas
BUG: still emitting unnecessary FutureWarning in DataFrame.sort_values with sparse columns Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Warnings Warnings that appear or should be added to pandas
Backport PR #48620 on branch 1.5.x (REGR: Performance decrease in factorize) Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Performance Memory or execution speed performance Regression Functionality that used to work in a prior pandas version
REGR: Performance decrease in factorize Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Performance Memory or execution speed performance Regression Functionality that used to work in a prior pandas version
REGR: groupby doesn't identify null values when sort=False Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Bug Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Regression Functionality that used to work in a prior pandas version
Backport PR #48539 on branch 1.5.x (REGR: groupby doesn't identify null values when sort=False) Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Bug Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Regression Functionality that used to work in a prior pandas version
ENH: Add dropna argument to DataFrame.value_counts() Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff API - Consistency Internal Consistency of API/Behavior
Backport PR #48164 on branch 1.4.x (BUG/REGR: Fix subset for DataFrameGroupBy.value_counts) Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Groupby
ENH: Support mask in unique Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff NA - MaskedArrays Related to pd.NA and nullable extension arrays
BUG: Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Bug Categorical Categorical Data Type Groupby
DataFrameGroupBy.value_counts includes non-observed categories of non-grouping columns Algos Add test for unique aggregation returning different dtypes Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Dtype Conversions Unexpected or buggy dtype conversions Testing pandas testing functions or related to the test suite
BUG: isin casting to float64 for unsigned int and list Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Bug Regression Functionality that used to work in a prior pandas version
DEPR: na_sentinel in factorize Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Deprecate Functionality to remove in pandas Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
PERF improve performance of is_lexsorted Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Performance Memory or execution speed performance
BUG: MaskedArray._quantile match non-nullable behavior Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff NA - MaskedArrays Related to pd.NA and nullable extension arrays Stale
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