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Pull requests: pandas-dev/pandas
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DOC: Replace XXX with Note in the code comments
#65130
opened Apr 9, 2026 by
star1327p
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7 tasks
DOC: Fix non-standard default value formatting in Grouper docstring
#65129
opened Apr 9, 2026 by
Vincent08199
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1 of 2 tasks
ENH/BUG: Utilize
_values_for_json in Series.to_json
#65127
opened Apr 8, 2026 by
Julian-Harbeck
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5 of 7 tasks
BUG: .loc with mixed scalar/slice on MultiIndex now drops scalar-keyed levels
Bug
Indexing
Related to indexing on series/frames, not to indexes themselves
MultiIndex
#65126
opened Apr 8, 2026 by
jbrockmendel
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Draft
6 tasks done
2
DOC: clarify hash_pandas_object index behavior with examples
Docs
#65125
opened Apr 8, 2026 by
jbrockmendel
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DOC: clarify that tz_localize(ambiguous='infer') requires monotonic timestamps
Docs
#65124
opened Apr 8, 2026 by
jbrockmendel
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DOC: clarify that ExtensionArray.take does not support scalar indices
Docs
#65123
opened Apr 8, 2026 by
jbrockmendel
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BUG: infer_dtype skipna ignored for Period and Interval (GH#64196)
#65121
opened Apr 8, 2026 by
maheshmakvana
•
Draft
BUG: DataFrame.rank() loses ExtensionArray dtype (GH#52829)
#65120
opened Apr 8, 2026 by
maheshmakvana
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FIX: silent data loss in MultiIndex __setitem__ with object-dtype level
#65119
opened Apr 8, 2026 by
Bahtya
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BUG: fix read_parquet failing with TimedeltaIndex column (#59692)
#65117
opened Apr 8, 2026 by
tianlangqin
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6 of 7 tasks
Add warning when DataFrame.update has no matching indices due to dtyp…
#65116
opened Apr 8, 2026 by
cherryc0117
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BUG: .dt.seconds Discrepancy Between NumPy and PyArrow Timedelta Dtypes
#65115
opened Apr 8, 2026 by
kjmin622
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5 of 7 tasks
DOC: Add practical example for removing duplicate rows
#65114
opened Apr 7, 2026 by
Adeyinka1
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BUG: add
_str_getitem to ArrowStringArrayMixin
#65113
opened Apr 7, 2026 by
tehunter
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6 tasks done
ENH: Add recursive parameter to StructAccessor.explode()
#65111
opened Apr 7, 2026 by
ideepakchauhan7
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PERF: make mask optional in BaseMaskedArray
Performance
Memory or execution speed performance
#65106
opened Apr 6, 2026 by
jbrockmendel
•
Draft
5 tasks done
PERF: avoid transpose for axis=1 reductions on multi-block DataFrames
Performance
Memory or execution speed performance
#65105
opened Apr 6, 2026 by
jbrockmendel
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3 tasks done
PERF: use PyArrow compute for month_name/day_name with string dtype
Performance
Memory or execution speed performance
#65104
opened Apr 6, 2026 by
jbrockmendel
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2 tasks done
PERF: use ufunc.reduceat for sorted groupby aggregations
Performance
Memory or execution speed performance
#65103
opened Apr 6, 2026 by
jbrockmendel
•
Draft
3 tasks done
BUG: Fix merge not upcasting datetime64 join key to highest resolution for inner/left joins
#65102
opened Apr 6, 2026 by
deniskrds
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6 of 7 tasks
ENH: Add union_categories parameter to pd.concat
Enhancement
#65098
opened Apr 6, 2026 by
jbrockmendel
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6 tasks done
4
PERF: Speed up DataFrame.apply(axis=1) for ExtensionDtype columns
Performance
Memory or execution speed performance
#65097
opened Apr 6, 2026 by
jbrockmendel
•
Draft
3 tasks done
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