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Pull requests: pandas-dev/pandas
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Fix alignment in Series subtraction with MultiIndex, Index and NaN values (#60908) Bug Indexing Related to indexing on series/frames, not to indexes themselves Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate MultiIndex Stale
#61381 by rit4rosa was closed Oct 5, 2025 Loading…
PERF: Only clear cached .levels when setting MultiIndex.names MultiIndex Performance Memory or execution speed performance
BUG: Improve MultiIndex label rename checks, docs and tests Bug MultiIndex Stale
#56936 by TabLand was closed Mar 26, 2024 Loading…
5 tasks done
PERF: DataFrame.loc and Series.loc when key is a MultiIndex MultiIndex Performance Memory or execution speed performance
BUG: resample method
DataFrame.resample changing index type to MultiIndex when dataframe is empty and upsampling MultiIndex Resample #55772 by Charlie-XIAO was closed Feb 28, 2024 Loading…
4 tasks done
Backport PR #54945 on branch 2.1.x (REGR: MultiIndex.append raising for overlapping IntervalIndex levels) Interval Interval data type MultiIndex Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
REGR: MultiIndex.append raising for overlapping IntervalIndex levels Interval Interval data type MultiIndex Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
Backport PR #54885 on branch 2.1.x (REGR: setitem with part of a MultiIndex raises) MultiIndex Regression Functionality that used to work in a prior pandas version
Backport PR #53102 on branch 2.0.x (REGR: MultiIndex.join not resorting levels of new index) MultiIndex Regression Functionality that used to work in a prior pandas version
REGR: MultiIndex.join not resorting levels of new index MultiIndex Regression Functionality that used to work in a prior pandas version
Backport PR #53060 on branch 2.0.x (REGR: df.loc setitem losing midx names) Indexing Related to indexing on series/frames, not to indexes themselves MultiIndex Regression Functionality that used to work in a prior pandas version
TST: test loc index df with a MultiIndex and constituent IntervalIndex Interval Interval data type MultiIndex Sprints Sprint Pull Requests Stale
#52811 by asdinara was closed May 24, 2023 Loading…
3 tasks
Backport PR #52001 on branch 2.0.x (BUG - CoW: Series with MultiIndex with tuples does not respect CoW) Copy / view semantics Indexing Related to indexing on series/frames, not to indexes themselves MultiIndex
Backport PR #51605 on branch 2.0.x (REGR: MultiIndex.isin with empty iterable raising) MultiIndex Regression Functionality that used to work in a prior pandas version
CLN: Remove MultiIndex._get_grouper_for_level Clean MultiIndex
#49597 by codamuse was closed Nov 13, 2022 Loading…
3 of 5 tasks
Backport PR #49080 on branch 1.5.x (REGR: midx.values resetting freq of underyling index) MultiIndex Regression Functionality that used to work in a prior pandas version
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
REGR: sort_value can not sort levels with non nas and nans MultiIndex Regression Functionality that used to work in a prior pandas version
#48626 by phofl was closed Oct 7, 2022 Loading…
5 tasks
BUG: MultiIndex.union losing dtype when right has duplicates MultiIndex NA - MaskedArrays Related to pd.NA and nullable extension arrays
#48591 by phofl was closed Oct 7, 2022 Loading…
4 of 5 tasks
Backport PR #47774 on branch 1.4.x (BUG: Fix fillna on multi indexed Dataframe doesn't work) DataFrame DataFrame data structure Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate MultiIndex
BUG FIX: incorrect type when casting to nullable type in multiindex dataframe MultiIndex NA - MaskedArrays Related to pd.NA and nullable extension arrays
#47419 by weikhor was closed Aug 16, 2022 Loading…
5 tasks
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