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Pull requests: pandas-dev/pandas
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BUG: Fix pivot_table margins dropping valid rows when aggfunc is a dict
#65768
opened May 31, 2026 by
anzinmhd
Contributor
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3 tasks done
PERF: read_csv faster for float columns
IO CSV
read_csv, to_csv
Performance
Memory or execution speed performance
#65767
opened May 31, 2026 by
jbrockmendel
Member
•
Draft
2 of 3 tasks
DOC: fix misleading deprecated DataFrameXchg type in from_dataframe docstring (#63111)
#65766
opened May 31, 2026 by
tan7vir
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1 of 5 tasks
DOC: Fix text visibility in dark mode for getting started data cards
#65763
opened May 31, 2026 by
avoronov-explyt
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DOC: Fix outdated matplotlib link in visualization.rst
#65762
opened May 31, 2026 by
avoronov-explyt
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PERF: limit ADBC table existence metadata
#65761
opened May 30, 2026 by
puneetdixit200
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7 tasks done
Fix outdated matplotlib link in visualization docs
#65760
opened May 30, 2026 by
Aanushka001
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DOC: fix outdated matplotlib link in visualization.rst
#65759
opened May 30, 2026 by
wali-reheman
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BUG: Fix core dump in fillna on ArrowDtype(pa.null())
#65758
opened May 30, 2026 by
karnyadavdev
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PERF: Fix regression in DatetimeIndex.normalize
Datetime
Datetime data dtype
Performance
Memory or execution speed performance
STYLE: enforce "|".join([...]) for message-regex alternations in tests
Code Style
Code style, linting, code_checks
#65756
opened May 30, 2026 by
jbrockmendel
Member
•
Draft
TST: Fix fastparquet xfail bound in test_to_parquet_new_file
#65755
opened May 30, 2026 by
jbrockmendel
Member
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PERF: restore to_datetime caching for duplicated input with an explicit format
Datetime
Datetime data dtype
Performance
Memory or execution speed performance
#65754
opened May 30, 2026 by
jbrockmendel
Member
•
Draft
BUG: avoid caller dtype cast for Series.map mapper
#65752
opened May 29, 2026 by
hanhan761
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3 tasks done
DEPR: deprecate DataFrame construction from ragged list of sequences
Constructors
Series/DataFrame/Index/pd.array Constructors
Deprecate
Functionality to remove in pandas
#65751
opened May 29, 2026 by
jbrockmendel
Member
•
Draft
2 tasks done
BUG: inplace where/mask corrupting multi-column 2D datetimelike blocks
Bug
Indexing
Related to indexing on series/frames, not to indexes themselves
Internals
Related to non-user accessible pandas implementation
Regression
Functionality that used to work in a prior pandas version
BUG: unstack corrupting source DataFrame via Copy-on-Write aliasing
Bug
Copy / view semantics
Regression
Functionality that used to work in a prior pandas version
Reshaping
Concat, Merge/Join, Stack/Unstack, Explode
BUG: get_indexer_non_unique raising ZeroDivisionError on empty index
Bug
Indexing
Related to indexing on series/frames, not to indexes themselves
#65747
opened May 29, 2026 by
jbrockmendel
Member
•
Draft
BUG: DataFrame.resample is adding padding at the start and end
#65745
opened May 28, 2026 by
morotti
Contributor
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7 of 11 tasks
4
ENH: fallback to zoneinfo Python API (for correct tz localization) for distant dates
Timezones
Timezone data dtype
#65733
opened May 25, 2026 by
jorisvandenbossche
Member
•
Draft
5 tasks
DOC: fix incorrect alignment description in where/mask docstrings
#65715
opened May 23, 2026 by
RonGamzu
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3 tasks done
BUG: raise on melt output-name collisions for var_name (#65654)
#65714
opened May 23, 2026 by
Sanjays2402
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5 tasks done
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