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Issues list

BUG: DataFrame.min with skipna=True raises TypeError when column contains np.nan and datetime.date Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Reduction Operations sum, mean, min, max, etc.
#61204 opened Mar 31, 2025 by tanjt107
3 tasks done
@MayurKishorKumar @Mohit-Kundu
4
BUG: inconsistent treatment of overflows between groupby.sum() and groupby.apply(lambda: _grp: _grp.sum()) and DataFrame.resample Bug Groupby Reduction Operations sum, mean, min, max, etc.
#60303 opened Nov 13, 2024 by vasil-pashov
2 of 3 tasks
1
BUG: skipna=True operations don't skip NaN in FloatingArrays Bug ExtensionArray Extending pandas with custom dtypes or arrays. Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate PDEP missing values Issues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprint Reduction Operations sum, mean, min, max, etc.
#59965 opened Oct 4, 2024 by carlocastoldi
3 tasks done
1
5
BUG/inconsistency: pd.Series(dtype=object).sum(skipna=True) does not respect skipna=True Bug Closing Candidate May be closeable, needs more eyeballs Reduction Operations sum, mean, min, max, etc.
#59764 opened Sep 9, 2024 by Code0x58
2 of 3 tasks
2
QST: Consistently apply Welford Method and Kahan Summation in roll_xxx functions API Design Needs Discussion Requires discussion from core team before further action Performance Memory or execution speed performance Reduction Operations sum, mean, min, max, etc.
#59715 opened Sep 5, 2024 by kaixiongg
2 tasks done
7
BUG: Pearson correlation outside expected range -1 to 1 Bug Reduction Operations sum, mean, min, max, etc.
#59652 opened Aug 29, 2024 by madrjor02-bh
3 tasks done
@ashlab11
4
ERR: consistent error messages for unsupported reduction operations API - Consistency Internal Consistency of API/Behavior Error Reporting Incorrect or improved errors from pandas Reduction Operations sum, mean, min, max, etc.
#59580 opened Aug 22, 2024 by jorisvandenbossche
BUG: Behaviour of sum/mean on sparse boolean arrays changed between 1.5.3 and pandas 2.2 Bug Dtype Conversions Unexpected or buggy dtype conversions ExtensionArray Extending pandas with custom dtypes or arrays. Reduction Operations sum, mean, min, max, etc.
#58015 opened Mar 26, 2024 by CompRhys
2 of 3 tasks
@dontgoto
5
BUG: Wrong kurtosis outcome due to inadequate fix to previous issues Bug Reduction Operations sum, mean, min, max, etc.
#57972 opened Mar 23, 2024 by j7168908jx
3 tasks done
2
5
DEPR: groupby.idxmin/idxmax will all NA values Deprecate Functionality to remove in pandas Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Reduction Operations sum, mean, min, max, etc.
#57745 opened Mar 6, 2024 by rhshadrach 4.0
2
PERF: groupby.first and groupby.last fallback to apply for EAs ExtensionArray Extending pandas with custom dtypes or arrays. Groupby Performance Memory or execution speed performance Reduction Operations sum, mean, min, max, etc.
#57591 opened Feb 23, 2024 by rhshadrach
3
BUG: does .any(axis=1, skipna=False) follow Kleene Logic? Bug Reduction Operations sum, mean, min, max, etc.
#57171 opened Jan 31, 2024 by MarcoGorelli
3 tasks done
3
PERF: pd.BooleanDtype in row operations is still very slow NA - MaskedArrays Related to pd.NA and nullable extension arrays Needs Info Clarification about behavior needed to assess issue Performance Memory or execution speed performance Reduction Operations sum, mean, min, max, etc.
#56903 opened Jan 16, 2024 by Alexia-I
2 of 3 tasks
10
BUG: DataFrameGroupBy.sum does not respect arguments min_count, numeric_only for PyArrow decimal Arrow pyarrow functionality Bug Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Reduction Operations sum, mean, min, max, etc.
#55810 opened Nov 3, 2023 by hkad98
3 tasks done
1
BUG: DataFrame.var() with axis=1 returns object Series instead of float64 Series? Bug Reduction Operations sum, mean, min, max, etc. Regression Functionality that used to work in a prior pandas version
#55194 opened Sep 19, 2023 by itholic
3 tasks done
2.2.3
3
BUG: pd.DataFrame.sum() min_count parameter does not work with Sparse[float64, nan] dtype Bug Reduction Operations sum, mean, min, max, etc. Sparse Sparse Data Type
#55123 opened Sep 13, 2023 by Danferno
3 tasks done
3
PERF: mean method works too long with object type Performance Memory or execution speed performance Reduction Operations sum, mean, min, max, etc. Strings String extension data type and string data
#54754 opened Aug 25, 2023 by Tialo
2 of 3 tasks
4
BUG: AttributeError when rolling.agg use np.prod to calculate rolling product Bug Reduction Operations sum, mean, min, max, etc. Window rolling, ewma, expanding
#54203 opened Jul 20, 2023 by xythu
2 of 3 tasks
3.0
11
BUG: Can't pass arguments to DataFrameGroupBy.agg when using list/dict-like and string aliases Apply Apply, Aggregate, Transform, Map Bug Groupby Reduction Operations sum, mean, min, max, etc.
#53839 opened Jun 25, 2023 by sartajsartaj
1 of 3 tasks
3
BUG: Inconsistent returns of Series.kurt() and Series.rolling().kurt() and scipy.stats.kurtosis(s, bias=False) Bug Reduction Operations sum, mean, min, max, etc.
#53639 opened Jun 13, 2023 by ysq151944
2 of 3 tasks
BUG: Possible bug in rolling standard deviation calculation when using custom weights (pandas.core.window.rolling.Window.std) Bug Reduction Operations sum, mean, min, max, etc. Window rolling, ewma, expanding
#53273 opened May 17, 2023 by jevkus
2 of 3 tasks
1
6
REF: Reductions Reduction Operations sum, mean, min, max, etc. Refactor Internal refactoring of code
#53261 opened May 16, 2023 by jbrockmendel
1
ERR: numeric_only in reduction operations should disallow passing non-bools Error Reporting Incorrect or improved errors from pandas Reduction Operations sum, mean, min, max, etc.
#53098 opened May 5, 2023 by phofl
3 tasks done
7
BUG: DataFrame.rank does not return EA types when original type was an EADtype Bug Dtype Conversions Unexpected or buggy dtype conversions ExtensionArray Extending pandas with custom dtypes or arrays. pyarrow dtype retention op with pyarrow dtype -> expect pyarrow result Reduction Operations sum, mean, min, max, etc.
#52829 opened Apr 21, 2023 by tinadu0806
3 tasks done
4
BUG: describe does not distinguish between Int64 and int64 Bug ExtensionArray Extending pandas with custom dtypes or arrays. NA - MaskedArrays Related to pd.NA and nullable extension arrays Reduction Operations sum, mean, min, max, etc.
#52576 opened Apr 10, 2023 by phofl
3 tasks done
2
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