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Issues list

BUG: combine_first reorders columns Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#60427 opened Nov 26, 2024 by davetapley updated Dec 1, 2024
3 tasks done
1
@U-S-jun
2
BUG: pd.concat() cannot concatenate more than 3 mixed-frequency dataframes with multi-index series Bug Needs Discussion Requires discussion from core team before further action Period Period data type Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#59775 opened Sep 11, 2024 by sakaiando updated Nov 24, 2024
3 tasks done
@dberardi99
2
ENH: Copy attrs on join (possibly depending on left, right, etc.) Enhancement metadata _metadata, .attrs Needs Info Clarification about behavior needed to assess issue Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#60351 opened Nov 18, 2024 by rommeswi updated Nov 21, 2024
1 of 3 tasks
1
8
BUG: when using id_vars in .melt(), the id_vars does not recognize the column name in a multiIndex dataframe Bug Index Related to the Index class or subclasses Needs Discussion Requires discussion from core team before further action Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#60018 opened Oct 11, 2024 by ivan-marroquin updated Nov 5, 2024
3 tasks done
5
QST: Why merge() output index value to a column? Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#55117 opened Sep 13, 2023 by ericpai updated Nov 2, 2024
2 tasks done
1
BUG: .max() raises exception on Series with object dtype and mixture of Timestamp and NaT: TypeError: '>=' not supported between instances of 'Timestamp' and 'float' Bug Dtype Conversions Unexpected or buggy dtype conversions Reshaping Concat, Merge/Join, Stack/Unstack, Explode Timezones Timezone data dtype
#58707 opened May 13, 2024 by kerrickstaley updated Oct 30, 2024
2 of 3 tasks
@li00-lab
4
ENH: Add sparse option in pivot_table / pivot / unstack Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode Sparse Sparse Data Type
#14493 opened Oct 25, 2016 by yupbank updated Oct 23, 2024
10
wide_to_long with NaNs in i argument Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#31976 opened Feb 14, 2020 by MalteMax updated Oct 19, 2024
1
BUG: Dataframe.pivot with multiple values columns does not preserve dtype of numeric columns Bug Dtype Conversions Unexpected or buggy dtype conversions Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#43547 opened Sep 13, 2021 by mgab updated Oct 14, 2024
3 tasks done
3
Please add force_suffixes to pandas.merge() Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#17834 opened Oct 10, 2017 by sorenwacker updated Oct 7, 2024
23
BUG pd.get_dummies does not propagate NaN correctly Enhancement Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Needs Discussion Requires discussion from core team before further action Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#15923 opened Apr 6, 2017 by beckermr updated Oct 6, 2024
1
18
ENH: Support for semi-join on index (subsetting a multi-index dataframe with a subset of the multi-index) Closing Candidate May be closeable, needs more eyeballs Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#58873 opened May 31, 2024 by gwerbin updated Oct 5, 2024
1 of 3 tasks
6
BUG: melt no longer supports id_vars and value_vars collapsing levels accross MultiIndex Bug Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#57663 opened Feb 28, 2024 by mark-thm updated Sep 21, 2024
3 tasks done
2.3
1
BUG: df.stack() returns wrong data when NaT is in index (regression since 2.1.0, ok in <= 2.0.3) Bug Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#57152 opened Jan 30, 2024 by behrenhoff updated Sep 21, 2024
3 tasks done
2.3
3
BUG: DataFrame.stack does not work when columns includes tuple level Bug Closing Candidate May be closeable, needs more eyeballs Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#59697 opened Sep 3, 2024 by or-jether updated Sep 3, 2024
2 of 3 tasks
1
BUG: concat_{categorical, compat} leads to erroneous result on non-ns datetime-EA Bug ExtensionArray Extending pandas with custom dtypes or arrays. Needs Tests Unit test(s) needed to prevent regressions Non-Nano datetime64/timedelta64 with non-nanosecond resolution Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#33331 opened Apr 6, 2020 by xhochy updated Aug 29, 2024
5
BUG: pd.merge has unexpected behaviour when joining on index / column Bug Needs Triage Issue that has not been reviewed by a pandas team member Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#57291 opened Feb 7, 2024 by sledtester updated Aug 28, 2024
2 of 3 tasks
1
@rob-sil
2
merge_asof on multiple columns? Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#20369 opened Mar 15, 2018 by lorenzori updated Aug 16, 2024
17
DOC: pivot function Docs good first issue Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#16578 opened Jun 2, 2017 by jesrael updated Aug 2, 2024
@slimkevo
6
DOC: Incorrect explanation of merge_asof with direction="backward" Docs Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#53279 opened May 17, 2023 by mosew updated Jul 17, 2024
1 task done
2
BUG: bytes of special nan value are lost after pd.concat Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Reshaping Concat, Merge/Join, Stack/Unstack, Explode Strings String extension data type and string data
#51675 opened Feb 27, 2023 by boxblox updated Jul 17, 2024
3 tasks done
2
ENH: merge_asof should support MultiIndex Enhancement MultiIndex Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#51372 opened Feb 14, 2023 by ddrinka updated Jul 17, 2024
2 of 3 tasks
ENH: "one-to-one" validation in left join should ignore right side non unique that are not in left Enhancement Needs Discussion Requires discussion from core team before further action Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#50492 opened Dec 29, 2022 by alonme updated Jul 16, 2024
1 of 3 tasks
1
ENH: Do not require to sort entire DF if by option used in merge_asof Enhancement Needs Discussion Requires discussion from core team before further action Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#49816 opened Nov 21, 2022 by filippzorin updated Jul 16, 2024
1 of 3 tasks
3
ENH: Add pd.Series.stack() -> pd.MultiIndex Enhancement Needs Discussion Requires discussion from core team before further action Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#49749 opened Nov 17, 2022 by erezinman updated Jul 16, 2024
1 of 3 tasks
2
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