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Issues list

BUG: DataFrameGroupBy.groups fails when Categorical indexer contains NaNs and dropna=False Bug Categorical Categorical Data Type Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#61356 by tehunter was closed Apr 28, 2025
3 tasks done
3.0
1
1
DOC: Incorrect deprecation example for is_period_dtype Docs
#60542 by tehunter was closed Dec 17, 2024
1 task done
1
BUG: Merging on two non-monotonic np.intc arrays fails Bug good first issue Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#60091 by tehunter was closed Oct 27, 2024
2 of 3 tasks
4
BUG: DatetimeIndex.union gives wrong result with "datetime64[us]" Bug datetime.date stdlib datetime.date support Index Related to the Index class or subclasses Needs Triage Issue that has not been reviewed by a pandas team member
#59036 by tehunter was closed Jun 24, 2024
2 of 3 tasks
1
BUG: pd.Series.duplicated/pd.core.algorithms.duplicated fails with float-based SparseArray Bug duplicated duplicated, drop_duplicates Sparse Sparse Data Type
#48788 by tehunter was closed Oct 3, 2023
3 tasks done
1
2
BUG: pd.core.algorithms.duplicated fails with masked Series Bug Needs Triage Issue that has not been reviewed by a pandas team member
#48786 by tehunter was closed Sep 26, 2022
2 of 3 tasks
2
ENH/PERF: ExtensionArray should offer a duplicated function Enhancement Needs Triage Issue that has not been reviewed by a pandas team member
#48747 by tehunter was closed Sep 23, 2022
2 of 3 tasks
1
BUG: df.to_excel fails for "border-style: hair" with xlsxwriter Bug IO Excel read_excel, to_excel Needs Triage Issue that has not been reviewed by a pandas team member Styler conditional formatting using DataFrame.style
#48649 by tehunter was closed Nov 29, 2022
3 tasks done
1
@tehunter
7
DOC: Sticky Headers in Table Visualization is broken in v1.5.0 Bug Docs Styler conditional formatting using DataFrame.style
#48644 by tehunter was closed Nov 22, 2022
1 task done
1.5.3
1
8
PERF: Excel Styler treatment of CSS side expansion is slow IO Excel read_excel, to_excel Needs Triage Issue that has not been reviewed by a pandas team member Performance Memory or execution speed performance
#47352 by tehunter was closed Jun 29, 2022
3 tasks done
1
2
BUG: xlsxwriter does not handle vertical-align: middle Bug Needs Triage Issue that has not been reviewed by a pandas team member
#46213 by tehunter was closed Mar 3, 2022
1 of 3 tasks
1
BUG: Styler cannot accept semicolon in CSS val Bug Styler conditional formatting using DataFrame.style
#46152 by tehunter was closed Mar 6, 2022
2 of 3 tasks
1.4.2
1
3
ENH: Styler apply_index should have the ability to pass data context to the user-provided func Apply Apply, Aggregate, Transform, Map Enhancement Styler conditional formatting using DataFrame.style
#45686 by tehunter was closed Feb 9, 2022
2
BUG/DOC: Merge with different left_on and right_on index names results in KeyError Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#45094 by tehunter was closed Dec 29, 2021
2 of 3 tasks
1.4
1
1
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