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Pull requests: pandas-dev/pandas
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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…
4 tasks done
Issue 60723 resolved Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#60730 by BAnSsal was closed Mar 10, 2025 Loading…
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…
5 tasks done
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…
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…
3 tasks done
ENH: Add leftsemi merge Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#57979 by phofl was closed Sep 25, 2024 Loading…
5 tasks
BUG: unstack with sort=False fails when used with the level parameter… Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode
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…
5 tasks
BUG: join on column with index Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#49360 by debnathshoham was closed Jan 16, 2023 Loading…
6 of 7 tasks
ENH: anti joins Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#49328 by debnathshoham was closed Feb 22, 2023 Loading…
4 of 5 tasks
Merge nonstring columns Closing Candidate May be closeable, needs more eyeballs Enhancement Needs Discussion Requires discussion from core team before further action Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#46879 by ericman93 was closed Aug 9, 2022 Loading…
4 tasks done
Add "rows" as option to "axis" docstring Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#46841 by martin-martin was closed May 24, 2022 Loading…
4 tasks
Bug/45740 stack_multi_columns extension array downcast Dtype Conversions Unexpected or buggy dtype conversions ExtensionArray Extending pandas with custom dtypes or arrays. Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#46095 by ladidadadum was closed Apr 24, 2022 Loading…
2 of 4 tasks
BUG: pd.concat produces frames with inconsistent order when concating the ones with categorical indices Categorical Categorical Data Type Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
Fix faulty logic with apply_empty_result() Apply Apply, Aggregate, Transform, Map Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#44937 by domdellumich was closed Feb 13, 2022 Loading…
2 of 3 tasks
BUG: inconsistency in dtype of replace() Dtype Conversions Unexpected or buggy dtype conversions Reshaping Concat, Merge/Join, Stack/Unstack, Explode
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…
4 tasks done
ENH: add suffixes argument to compare Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#44365 by erfannariman was closed Feb 6, 2022 Loading…
2 of 4 tasks
BUG: DataFrame.explode is failing on scalar int value. Bug Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
ENH:included anti join functionality Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#43056 by debnathshoham was closed Feb 13, 2022 Loading…
3 of 4 tasks
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ProTip! Updated in the last three days: updated:>2025-11-26.