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Backport PR #55527: BUG fix deprecation of Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Bug
limit and fill_method … Algos Backport PR #55627 on branch 2.1.x (BUG: value_counts returning incorrect dtype for string dtype) Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Bug Dtype Conversions Unexpected or buggy dtype conversions Groupby Strings String extension data type and string data
BUG: value_counts returning incorrect dtype for string dtype Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Bug Dtype Conversions Unexpected or buggy dtype conversions Groupby Strings String extension data type and string data
ENH: Implement masked algorithm for value_counts Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff NA - MaskedArrays Related to pd.NA and nullable extension arrays
Backport PR #54913 on branch 2.1.x (REGR: drop_duplicates raising for arrow strings) Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Regression Functionality that used to work in a prior pandas version
REGR: drop_duplicates raising for arrow strings Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Regression Functionality that used to work in a prior pandas version
Backport PR #54884 on branch 2.1.x (REGR: value_counts raises with bins) Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Regression Functionality that used to work in a prior pandas version
REGR: value_counts raises with bins Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Regression Functionality that used to work in a prior pandas version
TST: added test for missing categories for Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Categorical Categorical Data Type Needs Tests Unit test(s) needed to prevent regressions
value_counts Algos BUG: DataFrame.shift(axis=1) with EADtype Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff ExtensionArray Extending pandas with custom dtypes or arrays.
BUG: Use operator.xor() for dataframe boolean dtypes Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff
#53248 by mikejigglypuff was closed Aug 11, 2023 Loading… updated Aug 11, 2023
4 of 5 tasks
PERF: Use String HashTable in value_counts Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Mothballed Temporarily-closed PR the author plans to return to Performance Memory or execution speed performance Stale
ENH: .shift optionally takes multiple periods Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Groupby Transformations e.g. cumsum, diff, rank
BUG: Index.sort_values with key Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Bug Index Related to the Index class or subclasses
added shuffle method to DataFrame Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Enhancement
#31285 by mrinalTheCoder was closed Jan 26, 2020 Loading… updated May 11, 2023
3 of 5 tasks
BUG: Categorical.copy deep kwarg Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Categorical Categorical Data Type
#27024 by jbrockmendel was closed Jun 27, 2019 Loading… updated May 11, 2023
2 of 4 tasks
BUG: Accept kwargs kind and na_position in Series.sort_index (GH13589) Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff API Design Compat pandas objects compatability with Numpy or Python functions
#13729 by sahildua2305 was closed Nov 25, 2016 Loading… updated May 11, 2023
3 tasks done
add biweight midcorrelation as option for series correlation Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Enhancement Numeric Operations Arithmetic, Comparison, and Logical operations
#9826 by olgabot was closed Oct 18, 2015 Loading… updated May 11, 2023
ENH: numerically stable rolling_skew and rolling_kurt Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Enhancement
#8424 by jaimefrio was closed Jan 2, 2016 Loading… updated May 11, 2023
CLN/TYP: stronger typing in safe_sort Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Clean Typing type annotations, mypy/pyright type checking
BUG: describe not returning ArrowDtype Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Arrow pyarrow functionality Dtype Conversions Unexpected or buggy dtype conversions
"Backport PR #51978 on branch 2.0.x (BUG/API: preserve non-nano in factorize/unique)" Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Non-Nano datetime64/timedelta64 with non-nanosecond resolution
BUG/API: preserve non-nano in factorize/unique Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Non-Nano datetime64/timedelta64 with non-nanosecond resolution
PERF: Reject non-string object arrays faster in factorize Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Performance Memory or execution speed performance
ProTip! Updated in the last three days: updated:>2025-11-28.