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Pull requests list

BUG: Raise TypeError when joining with non-DataFrame using 'on=' (GH#61434) Error Reporting Incorrect or improved errors from pandas Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#61454 by iabhi4 was closed Oct 5, 2025 Loading… updated Oct 5, 2025
4 tasks done
Issue 60723 resolved Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#60730 by BAnSsal was closed Mar 10, 2025 Loading… updated Mar 10, 2025
5 tasks done
ENH: Add sort_columns parameter to combine_first Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#60437 by U-S-jun was closed Dec 29, 2024 Loading… updated Dec 29, 2024
5 tasks done
ENH: Add leftsemi merge Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#57979 by phofl was closed Sep 25, 2024 Loading… updated Sep 25, 2024
5 tasks
BUG: unstack with sort=False fails when used with the level parameter… Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#56357 by renanffernando was merged May 21, 2024 Loading… updated Jun 18, 2024
5 of 6 tasks
3.0
BUG: Add np.uintc to _factorizers in merge.py to fix KeyError when merging DataFrames with uintc columns Reshaping Concat, Merge/Join, Stack/Unstack, Explode Windows Windows OS
#58727 by Tirthchoksi22 was closed Jun 17, 2024 Loading… updated Jun 17, 2024
5 tasks done
BUG: Fixed merge between int64 uint64 and wrote test Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#58332 by YKim0172 was closed May 8, 2024 Loading… updated May 8, 2024
3 tasks done
BUG: stack doesn't preserve lower precision floating dtypes Bug Dtype Conversions Unexpected or buggy dtype conversions Mothballed Temporarily-closed PR the author plans to return to Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#51602 by lithomas1 was closed Aug 25, 2023 Loading… updated Aug 25, 2023
5 tasks
ENH: pd.Series.shift and .diff to accept a collection of numbers Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#44660 by skwirskj was closed Jan 16, 2022 Loading… updated Jul 13, 2023
4 tasks done
Fix Issue #34923: Inferred dtype at the end of df explode method Dtype Conversions Unexpected or buggy dtype conversions Needs Discussion Requires discussion from core team before further action Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#35011 by SanthoshBala18 was closed Nov 26, 2020 Loading… updated May 11, 2023
5 tasks
Allow merge_asof on first column of like-levelled MultiIndexes MultiIndex Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#34259 by tmct was closed Jun 20, 2020 Loading… updated May 11, 2023
3 of 4 tasks
ENH: accept None behaviour for suffixes in DataFrame.merge API Design Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#25243 by charlesdong1991 was closed Mar 19, 2019 Loading… updated May 11, 2023
4 tasks
DOC: update the DataFrame.mode method docstring Docs Numeric Operations Arithmetic, Comparison, and Logical operations Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#20241 by mkoo21 was closed Aug 17, 2018 Loading… updated May 11, 2023
5 tasks done
rolling.quantile returns an interpolated result Numeric Operations Arithmetic, Comparison, and Logical operations Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#16216 by guillemborrell was closed May 5, 2017 Loading… updated May 11, 2023
4 tasks done
ENH: Crosstab support for setting the margins name #15972 API Design Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#15973 by slide333333 was closed May 30, 2017 Loading… updated May 11, 2023
WIP: ENH: pivot/groupby index with nan Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#12607 by nbonnotte was closed Jul 26, 2017 Loading… updated May 11, 2023
17 of 36 tasks
BUG: Join behaved like an inner join when only one side had MultiIndex MultiIndex Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#37211 by phofl was closed Jun 16, 2021 Loading… updated Apr 27, 2023
5 tasks done
ENH: change get_dummies default dtype to bool Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#48022 by kianelbo was merged Oct 11, 2022 Loading… updated Mar 1, 2023
4 tasks done
2.0
ENH: anti joins Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#49328 by debnathshoham was closed Feb 22, 2023 Loading… updated Feb 22, 2023
4 of 5 tasks
TST: add tests to validate margin results for pivot (#25815) Categorical Categorical Data Type Reshaping Concat, Merge/Join, Stack/Unstack, Explode Testing pandas testing functions or related to the test suite
#27245 by peterpanmj was merged Jul 9, 2019 Loading… updated Jan 31, 2023
1 task
0.25.0
BUG: join on column with index Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#49360 by debnathshoham was closed Jan 16, 2023 Loading… updated Jan 16, 2023
6 of 7 tasks
BUG: Check for duplicate names columns and index in crosstab Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#28474 by cuchoi was closed Nov 22, 2020 Loading… updated Dec 15, 2022
5 tasks done
BUG: DataFrame.melt gives unexpected result when column "value" already exists Deprecate Functionality to remove in pandas Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#35003 by pizzathief was merged Jul 2, 2020 Loading… updated Nov 2, 2022 1.1
Change mylen function to account for NaN empty lists when exploding on multiple columns Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#46791 by ehariri was closed Oct 24, 2022 Loading… updated Oct 24, 2022
1 of 4 tasks
ENH: conditional merge - initial concept Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#42964 by ms7463 was closed Apr 24, 2022 Loading… updated Sep 27, 2022
4 tasks
ProTip! Exclude everything labeled bug with -label:bug.