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Pull requests list

BUG: Add PyArrow datelike type support for map() Apply Apply, Aggregate, Transform, Map Arrow pyarrow functionality Bug
#61644 by KevsterAmp was closed Sep 10, 2025 Loading…
4 of 5 tasks
1
12
FIX: itemsize wrong for date32[day][pyarrow] dtype #57948 Arrow pyarrow functionality
#62657 by mraabhijit was merged Oct 18, 2025 Loading…
4 of 5 tasks
3.0
1
12
read_json engine argument integration Arrow pyarrow functionality IO JSON read_json, to_json, json_normalize
#49041 by abkosar was closed Oct 24, 2022 Loading…
5 tasks
1
11
BUG: Fixed bug when creating new column with missing values when setting a single string value Arrow pyarrow functionality Strings String extension data type and string data
#56321 by MarcoGorelli was merged Dec 20, 2023 Loading…
5 tasks
1
11
REGR: DatetimeTZDtype __from_arrow__ interprets UTC values as wall time Arrow pyarrow functionality Regression Functionality that used to work in a prior pandas version
#56922 by lithomas1 was merged Jan 19, 2024 Loading…
5 tasks
2.2
1
11
BUG: indexing empty pyarrow backed object returning corrupt object Arrow pyarrow functionality Indexing Related to indexing on series/frames, not to indexes themselves
#51741 by phofl was merged Mar 8, 2023 Loading…
5 tasks done
2.0
1
11
BUG: ArrowDtype.construct_from_string round-trip Arrow pyarrow functionality
#50689 by jbrockmendel was merged Feb 18, 2023 Loading…
5 tasks
2.0
11
PERF: ArrowExtensionArray.fillna when array does not contains any nulls Arrow pyarrow functionality Performance Memory or execution speed performance
#51635 by lukemanley was merged Mar 17, 2023 Loading…
4 tasks done
2.1
11
API: ArrowExtensionArray.value_counts returns pyarrow.int64 type Arrow pyarrow functionality
#51542 by mroeschke was merged Feb 24, 2023 Loading…
4 of 5 tasks
2.0
1
11
BUG: DataFrame repr with ArrowDtype with extension Arrow pyarrow functionality DataFrame DataFrame data structure Output-Formatting __repr__ of pandas objects, to_string
#54130 by mroeschke was merged Jul 18, 2023 Loading…
2 of 5 tasks
2.1
1
11
REF: Rename mode.nullable_backend to mode.dtype_backend Arrow pyarrow functionality Refactor Internal refactoring of code
#50291 by mroeschke was merged Dec 22, 2022 Loading… 2.0
11
BUG: fix bug in str.fullmatch for Arrow backend with optional groups Arrow pyarrow functionality Strings String extension data type and string data
#61073 by ptth222 was merged Sep 21, 2025 Loading… 2.3.3
1
11
ENH: use native filesystem (if available) for read_parquet with pyarrow engine Arrow pyarrow functionality Enhancement IO Parquet parquet, feather Stale
#41194 by jorisvandenbossche was closed Feb 22, 2023 Loading…
10
TST: Add missing skips for unavailable pyarrow Arrow pyarrow functionality Stale Testing pandas testing functions or related to the test suite
#57397 by QuLogic was closed Feb 10, 2025 Loading…
3 tasks done
10
ENH: support the Arrow PyCapsule Interface on pandas.DataFrame (export) Arrow pyarrow functionality
#56587 by jorisvandenbossche was merged Jan 18, 2024 Loading… 2.2
10
PERF: groupby reductions with pyarrow dtypes Arrow pyarrow functionality Groupby Performance Memory or execution speed performance
#52469 by jbrockmendel was merged Apr 7, 2023 Loading…
1 of 5 tasks
2.1
1
10
PERF: Improve performance for arrow engine and dtype_backend=pyarrow for datetime conversion Arrow pyarrow functionality IO CSV read_csv, to_csv Performance Memory or execution speed performance
#52548 by phofl was merged Apr 11, 2023 Loading…
4 of 5 tasks
2.0.1
1
10
BUG: read_csv raising for arrow engine and parse_dates Arrow pyarrow functionality IO CSV read_csv, to_csv
#53295 by phofl was merged May 19, 2023 Loading…
5 tasks
2.0.2
10
BUG: checking for value type when parquet is partitioned Arrow pyarrow functionality IO Parquet parquet, feather
#54074 by SanjithChockan was merged Jul 13, 2023 Loading…
3 of 4 tasks
2.1
1
10
ENH: Implement more efficient merge for arrow strings Arrow pyarrow functionality Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#54443 by phofl was merged Aug 8, 2023 Loading…
5 tasks
2.1
10
ENH: Add ArrowDype and .array.ArrowExtensionArray to top level Arrow pyarrow functionality
#47818 by mroeschke was merged Aug 16, 2022 Loading…
2 tasks done
1.5
10
ENH: support reductions for pyarrow temporal types Arrow pyarrow functionality
#50998 by jbrockmendel was merged Feb 9, 2023 Loading… 2.0
10
Enh arrow json extension Arrow pyarrow functionality
#61103 by asharmalik19 was merged Mar 12, 2025 Loading…
4 of 5 tasks
3.0
1
10
CI: Bump pandas-gbq to one that doesn't pin pyarrow Arrow pyarrow functionality Dependencies Required and optional dependencies Mothballed Temporarily-closed PR the author plans to return to Stale
#54200 by lithomas1 was closed Oct 23, 2023 Loading…
5 tasks
9
TST: Series repr with pyarrow date32 type Arrow pyarrow functionality Dtype Conversions Unexpected or buggy dtype conversions Output-Formatting __repr__ of pandas objects, to_string Timezones Timezone data dtype
#48258 by mroeschke was closed Sep 20, 2022 • Draft
4 tasks done
1
9
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