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Pull requests list

PDEP-10: Add pyarrow as a required dependency Arrow pyarrow functionality Dependencies Required and optional dependencies PDEP pandas enhancement proposal
#52711 by mroeschke was merged Jul 30, 2023 Loading…
1 task done
2.1
1
188
[EHN] pandas.DataFrame.to_orc Arrow pyarrow functionality Enhancement IO Data IO issues that don't fit into a more specific label
#44554 by iajoiner was merged Jun 14, 2022 Loading…
4 tasks done
1.5
1
137
read_json engine keyword and pyarrow integration Arrow pyarrow functionality IO JSON read_json, to_json, json_normalize
#49249 by abkosar was merged Feb 10, 2023 Loading…
3 of 5 tasks
2.0
1
86
Bitmask Backed MaskedArray Arrow pyarrow functionality Build Library building on various platforms NA - MaskedArrays Related to pd.NA and nullable extension arrays
#54506 by WillAyd was closed Oct 23, 2023 Loading…
64
ENH: Incorproate ArrowDtype into ArrowExtensionArray Arrow pyarrow functionality Enhancement
#47034 by mroeschke was merged Jun 9, 2022 Loading…
2 tasks done
1.5
54
ENH: Add on_bad_lines for pyarrow Arrow pyarrow functionality IO CSV read_csv, to_csv
#54643 by amithkk was merged Sep 22, 2023 Loading…
3 tasks done
2.2
1
37
Fix integral truediv and floordiv for pyarrow types with large divisor and avoid floating points for floordiv Arrow pyarrow functionality
#56677 by rohanjain101 was merged Jan 5, 2024 Loading…
6 tasks done
2.2
2
36
Fix BUG: read_sql tries to convert blob/varbinary to string with pyarrow backend Arrow pyarrow functionality IO SQL to_sql, read_sql, read_sql_query Stale
#60105 by kastkeepitjumpinlikekangaroos was closed May 27, 2025 Loading…
5 tasks done
1
36
Remove use_nullable_dtypes and add dtype_backend keyword Arrow pyarrow functionality NA - MaskedArrays Related to pd.NA and nullable extension arrays
#51853 by phofl was merged Mar 13, 2023 Loading…
5 tasks
2.0
35
ENH: add __from_pyarrow__ support to DatetimeTZDtype Arrow pyarrow functionality Datetime Datetime data dtype
#52201 by tswast was merged Apr 17, 2023 Loading…
5 tasks done
2.1
1
35
ENH: Add Arrow CSV Reader Arrow pyarrow functionality Enhancement IO CSV read_csv, to_csv Performance Memory or execution speed performance
#43072 by lithomas1 was merged Aug 27, 2021 Loading…
4 tasks
1.4
1
35
ENH: Add arrow engine to to_csv Arrow pyarrow functionality Enhancement IO CSV read_csv, to_csv
#54171 by lithomas1 was closed Apr 23, 2024 Loading…
5 tasks
1
32
BUG: Fix Series.str.contains with compiled regex on Arrow string dtype Arrow pyarrow functionality Bug Strings String extension data type and string data
#61946 by Aniketsy was merged Aug 14, 2025 Loading… 2.3.2
1
30
BUG: Fix some more arrow CSV tests Arrow pyarrow functionality IO CSV read_csv, to_csv
#52087 by lithomas1 was merged Apr 10, 2023 Loading…
5 tasks
2.0.2
29
BUG: fix read_json ignoring the dtype with the pyarrow engine Arrow pyarrow functionality IO JSON read_json, to_json, json_normalize
#60997 by will-larkin was merged Mar 19, 2025 Loading…
5 tasks done
3.0
1
28
BUG: Fix pyarrow categoricals not working for pivot and multiindex Arrow pyarrow functionality Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#61193 by robin-mader-bis was merged Apr 14, 2025 Loading…
5 tasks done
3.0
1
28
Fix error message for pyarrow and \s+ Arrow pyarrow functionality Error Reporting Incorrect or improved errors from pandas IO CSV read_csv, to_csv Stale
#52563 by GrammatikakisDimitris was closed Jul 24, 2023 Loading…
4 of 5 tasks
1
25
BUG: to_datetime re-parsing Arrow-backed objects Arrow pyarrow functionality Datetime Datetime data dtype
#53301 by lithomas1 was merged Jul 11, 2023 Loading…
5 tasks
2.1
1
25
BUG/ENH: Use pyarrow grouped aggregation functions for pyarrow-backed groupby ops Arrow pyarrow functionality Bug Groupby
#55234 by lukemanley was closed Oct 1, 2023 Loading…
5 tasks done
2.2
1
25
ENH: add Series.struct accessor for ArrowDtype[struct] Accessors accessor registration mechanism (not .str, .dt, .cat) Arrow pyarrow functionality Enhancement
#54977 by tswast was merged Sep 18, 2023 Loading…
5 tasks done
2.2
1
23
Switch arrow type for string array to large string Arrow pyarrow functionality Strings String extension data type and string data
#56220 by phofl was merged Dec 21, 2023 Loading…
5 tasks
2.2
1
23
TST: check compatibility with pyarrow types_mapper parameter Arrow pyarrow functionality Testing pandas testing functions or related to the test suite
#44369 by tswast was merged Dec 1, 2021 Loading…
4 tasks done
1.4
1
23
REF (string): de-duplicate ArrowStringArray methods Arrow pyarrow functionality backported Refactor Internal refactoring of code Strings String extension data type and string data
#59555 by jbrockmendel was merged Sep 11, 2024 Loading…
5 tasks
2.3
23
ENH: add basic DataFrame.from_arrow class method for importing through Arrow PyCapsule interface Arrow pyarrow functionality
#59696 by jorisvandenbossche was merged Nov 26, 2025 Loading…
2 of 4 tasks
3.0
23
BUG: __from_arrow__ doesn't accept pyarrow null arrays for numeric ma… Arrow pyarrow functionality Bug NA - MaskedArrays Related to pd.NA and nullable extension arrays
#52223 by lithomas1 was merged Apr 7, 2023 Loading…
5 tasks
2.1
22
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