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Pull requests: pandas-dev/pandas
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BUG: nansem with mask + skipna=False + axis returns scalar nan instead of array
#65378
opened Apr 27, 2026 by
Abineshabee
Contributor
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Bump scientific-python/upload-nightly-action from 0.6.3 to 0.6.4
CI
Continuous Integration
Dependencies
Required and optional dependencies
#65376
opened Apr 27, 2026 by
dependabot
Bot
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DOC: Add Pandas Workout book and Bamboo Weekly
Docs
#65374
opened Apr 27, 2026 by
rhshadrach
Member
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7 tasks
BUG: Fix Behavior Change from #64366 Regarding NaN Handling With Mask
#65372
opened Apr 26, 2026 by
Alvaro-Kothe
Member
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DOC: fix to_numeric docstring - add Index/scalar return types, fix dtype_backend description
#65371
opened Apr 26, 2026 by
Nikhil-jaiswal007
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3 of 7 tasks
BUG: str.replace hangs indefinitely on empty pattern with PyArrow backend
#65370
opened Apr 26, 2026 by
Scolliq
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5 of 7 tasks
DOC: Document pyarrow vs python string storage differences (#63105)
#65368
opened Apr 25, 2026 by
Manjugadupudi
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Test: Add regression test for DataFrame.sum() with negative values and NaN
#65367
opened Apr 25, 2026 by
aastha2212
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BUG: select_dtypes ExtensionDtype handling (GH#40234, GH#59888)
Bug
#65366
opened Apr 25, 2026 by
jbrockmendel
Member
•
Draft
4 tasks done
2
PERF: speed up read_sas string columns
IO SAS
SAS: read_sas
Performance
Memory or execution speed performance
#65364
opened Apr 24, 2026 by
jbrockmendel
Member
•
Draft
3 of 4 tasks
PERF: speed up read_sas for full-precision numeric columns
IO SAS
SAS: read_sas
Performance
Memory or execution speed performance
#65363
opened Apr 24, 2026 by
jbrockmendel
Member
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1 of 2 tasks
BUG: fixed inconsistency in the behaviour of DatetimeIndex.is_year_start on the frequency "BYS"
#65362
opened Apr 24, 2026 by
harrywzl
Contributor
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4 of 7 tasks
BUG: Fix df.query() with 'in' operator and column references (#65357)
#65360
opened Apr 24, 2026 by
harrywzl
Contributor
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4 of 7 tasks
Improve error message clarity in fillna for invalid value types
#65358
opened Apr 24, 2026 by
Prer26
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2 of 4 tasks
BUG: Fix interpolate linear forward for pyarrow dtype
#65355
opened Apr 24, 2026 by
mariam851
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DEPR: followup warn on .at setitem when a new column expands the frame
#65354
opened Apr 24, 2026 by
jbrockmendel
Member
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2 tasks done
PERF: read_csv parse_dates directly to datetime64 in C parser
IO CSV
read_csv, to_csv
Performance
Memory or execution speed performance
#65353
opened Apr 24, 2026 by
jbrockmendel
Member
•
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
IO CSV
read_csv, to_csv
Performance
Memory or execution speed performance
#65350
opened Apr 23, 2026 by
jbrockmendel
Member
•
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
IO CSV
read_csv, to_csv
Performance
Memory or execution speed performance
#65347
opened Apr 23, 2026 by
jbrockmendel
Member
•
Draft
3 of 4 tasks
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