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Pull requests: pandas-dev/pandas
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DOC: clarify bool vs int behavior in object-dtype for factorize and unique
#65149
opened Apr 10, 2026 by
123Alissaa
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3 of 7 tasks
BUG:
str.replace("", "") sometimes hangs up the console
#65147
opened Apr 10, 2026 by
kjmin622
Contributor
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5 of 7 tasks
CLN: Replace no_default signature with False for allow_duplicates in insert and reset_index
#65146
opened Apr 10, 2026 by
tianlangqin
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2 of 6 tasks
DOC: document required external libraries in read_* I/O docstrings
Docs
#65143
opened Apr 9, 2026 by
jbrockmendel
Member
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3 tasks done
BUG : update
SeriesGroupBy.ohlc() to honor as_index=False
#65141
opened Apr 9, 2026 by
gautamvarmadatla
Contributor
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6 of 7 tasks
BUG: Fix str.replace with empty pattern hanging on pyarrow backend
#65135
opened Apr 9, 2026 by
Bahtya
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Parquet IO: also use zoneinfo timezones by default even when pyarrow uses pytz
Arrow
pyarrow functionality
IO Parquet
parquet, feather
Timezones
Timezone data dtype
BUG: read parquet files with older pytz (DEP: keep lower pytz minimum version)
Bug
IO Parquet
parquet, feather
Timezones
Timezone data dtype
BUG: Raise ValueError for non-boolean numeric_only in DataFrame/Series reductions (GH#53098)
#65131
opened Apr 9, 2026 by
GalSakuri
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ENH/BUG: Utilize Extending pandas with custom dtypes or arrays.
IO JSON
read_json, to_json, json_normalize
_values_for_json in Series.to_json
Enhancement
ExtensionArray
#65127
opened Apr 8, 2026 by
Julian-Harbeck
Contributor
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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
Member
•
Draft
6 tasks done
2
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
BUG: .dt.seconds Discrepancy Between NumPy and PyArrow Timedelta Dtypes
#65115
opened Apr 8, 2026 by
kjmin622
Contributor
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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
Contributor
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6 tasks done
PERF: make mask optional in BaseMaskedArray
Performance
Memory or execution speed performance
#65106
opened Apr 6, 2026 by
jbrockmendel
Member
•
Draft
5 tasks done
PERF: use ufunc.reduceat for sorted groupby aggregations
Performance
Memory or execution speed performance
#65103
opened Apr 6, 2026 by
jbrockmendel
Member
•
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
Contributor
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6 of 7 tasks
ENH: Add union_categories parameter to pd.concat
Enhancement
#65098
opened Apr 6, 2026 by
jbrockmendel
Member
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6 tasks done
4
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