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Pull requests: pandas-dev/pandas
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TST: wrap parametrize iterables in list() for pytest 9.1+
#65888
opened Jun 15, 2026 by
jbrockmendel
Member
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PERF: Speed up
import pandas with PEP 810 lazy imports
#65885
opened Jun 15, 2026 by
eendebakpt
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3 of 4 tasks
STY: grouped textwrap import with standard library imports in timedelta module
#65882
opened Jun 15, 2026 by
CristianCreson
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2 of 7 tasks
BUG: Validate var_name doesn't collide with id_vars or value_name in melt
#65878
opened Jun 14, 2026 by
factnn
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ENH: Support %N directive in strptime parsing (#65863)
#65875
opened Jun 13, 2026 by
pranavchoudhary-tech
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Bugfix/57925 bytes categorical index
#65873
opened Jun 13, 2026 by
pranavchoudhary-tech
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5 of 7 tasks
BUG: to_json not warning about deprecated epoch date_format for datetime index/columns (#65868)
#65869
opened Jun 12, 2026 by
gaoflow
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4 tasks done
CLN: remove the deprecated is_sparse function
Clean
#65867
opened Jun 12, 2026 by
natmokval
Contributor
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BUG: to_json raising OverflowError for Period data (GH#55490)
#65866
opened Jun 12, 2026 by
sarathfrancis90
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5 tasks done
BUG: raise helpful errors for unsupported pyarrow read_csv usage
Arrow
pyarrow functionality
Bug
Error Reporting
Incorrect or improved errors from pandas
IO CSV
read_csv, to_csv
#65862
opened Jun 11, 2026 by
jbrockmendel
Member
•
Draft
TST: assert helpful errors for never-supported pyarrow read_csv cases
Arrow
pyarrow functionality
IO CSV
read_csv, to_csv
Testing
pandas testing functions or related to the test suite
#65861
opened Jun 11, 2026 by
jbrockmendel
Member
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BUG: fix read_csv pyarrow engine column-name and dtype handling
Arrow
pyarrow functionality
Bug
IO CSV
read_csv, to_csv
#65859
opened Jun 11, 2026 by
jbrockmendel
Member
•
Draft
2 tasks done
BUG: DataFrame loc set incorrectly aligns on scalar column assignment…
#65852
opened Jun 10, 2026 by
pranavchoudhary-tech
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6 of 7 tasks
ENH: Add errors='coerce' to DataFrame.astype / Series.astype (GH#48781)
#65851
opened Jun 10, 2026 by
berasaikat
Contributor
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3 tasks done
CI: Add automation gating PR creation to assigned contributors
#65849
opened Jun 10, 2026 by
rhshadrach
Member
•
Draft
BUG: track CoW references through Index.where
#65846
opened Jun 10, 2026 by
jbrockmendel
Member
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fix dataframe flex arith preserving nullable int dtype with fill_value
#65842
opened Jun 10, 2026 by
wasimat404
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4 tasks done
BUG: Categorical.map() errors when mapping categories to tuples
#65841
opened Jun 10, 2026 by
SharadhNaidu
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6 of 7 tasks
PERF: Big slowdown of searchsorted on pd.Series
Performance
Memory or execution speed performance
Sorting
e.g. sort_index, sort_values
Strings
String extension data type and string data
BUG: Series.sort_values ignore_index has no effect on already sorted Series (#65833)
#65836
opened Jun 9, 2026 by
rahul-COD3
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BUG: Fix nanany/nanall raising ValueError with skipna=False on nullable dtypes
#65835
opened Jun 9, 2026 by
factnn
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