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Pull requests: pandas-dev/pandas
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BUG: Fix interpolate linear forward for pyarrow dtype
#65355
opened Apr 24, 2026 by
mariam851
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DEPR: warn on .at setitem when a new column expands the frame
#65354
opened Apr 24, 2026 by
jbrockmendel
Member
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Draft
2 tasks done
PERF: read_csv parse_dates directly to datetime64 in C parser
Performance
Memory or execution speed performance
#65353
opened Apr 24, 2026 by
jbrockmendel
Member
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Draft
5 tasks done
PERF: Use SSE2 and Neon instructions to reduce moments
#65352
opened Apr 24, 2026 by
Alvaro-Kothe
Member
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7 of 10 tasks
Backport PR #63301 on branch 2.3.x (BUG: pydatetime + Timedelta[non-nano] incorrect results)
#65351
opened Apr 23, 2026 by
ghackebeil
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2 tasks done
PERF: read_csv faster for integer and string columns
Performance
Memory or execution speed performance
#65350
opened Apr 23, 2026 by
jbrockmendel
Member
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Draft
2 of 3 tasks
BUG: Fix DataFrame.query when column is named inf or Inf (GH#35695)
#65349
opened Apr 23, 2026 by
tinezivic
Contributor
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5 of 7 tasks
PERF: faster integer column parsing in read_csv C engine
Performance
Memory or execution speed performance
#65347
opened Apr 23, 2026 by
jbrockmendel
Member
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Draft
3 of 4 tasks
DOC: clarify tz_localize does not alter date/time representation (#55955)
#65344
opened Apr 23, 2026 by
oskarseweryn
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4 of 7 tasks
BUG: Fix AttributeError in concat when result is Series
#65343
opened Apr 23, 2026 by
wayne001106
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BUG: fix Series.combine_first crash when names are Timestamps (#65333)
#65342
opened Apr 23, 2026 by
Vincent08199
Contributor
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4 of 7 tasks
DOC: document TextFileReader in the API reference
Docs
#65341
opened Apr 22, 2026 by
jbrockmendel
Member
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3 tasks done
2
DOC: clarify resolution-dependence of Timestamp/Timedelta min/max/resolution
Docs
#65339
opened Apr 22, 2026 by
jbrockmendel
Member
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1 of 2 tasks
PERF: avoid dtype.name in DataFrame block grouping
Performance
Memory or execution speed performance
#65337
opened Apr 22, 2026 by
jbrockmendel
Member
•
Draft
4 tasks done
ENH: Suggest alternative package managers in optional dependency error
#65335
opened Apr 22, 2026 by
sh4dzilla
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6 of 7 tasks
BUG: fix empty groupby(..., as_index=False).apply(...) index name inconsistency
#65332
opened Apr 22, 2026 by
Ashish-ml-eng
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BUG: Fix deprecation warning stacklevel in option_context (GH#63235)
#65329
opened Apr 22, 2026 by
tinezivic
Contributor
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6 of 7 tasks
BUG: disable numexpr for incompatible numpy>=2.3 + numexpr<2.11 combos
#65328
opened Apr 22, 2026 by
armorbreak001
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REF: relocate _freq storage from DTA/TDA arrays to Index (GH#24566)
Refactor
Internal refactoring of code
#65322
opened Apr 21, 2026 by
jbrockmendel
Member
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4 tasks done
BUG: preserve IntEnum in DataFrame constructor when dtype=object (GH#59380)
#65317
opened Apr 21, 2026 by
galsakuri
Contributor
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BUG: Preserve nullable index dtype in Extending pandas with custom dtypes or arrays.
Index
Related to the Index class or subclasses
_transform_index
ExtensionArray
#65316
opened Apr 21, 2026 by
gautamvarmadatla
Contributor
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6 of 7 tasks
BUG: Fixed DataFrame.resample() generating errors when bin edges fall on DST transitions
#65314
opened Apr 20, 2026 by
presidentjacob
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6 of 7 tasks
BUG: Fix DataFrame.at/iat raising ValueError when storing list-like in a single cell
#65311
opened Apr 20, 2026 by
tinezivic
Contributor
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6 of 7 tasks
BUG: fix ArrowExtensionArray constructor raising on np.nan in string sequences
#65307
opened Apr 20, 2026 by
tinezivic
Contributor
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