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Pull requests: pandas-dev/pandas
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TST: Add regression test for groupby().apply() external mutation Apply Apply, Aggregate, Transform, Map Groupby Needs Tests Unit test(s) needed to prevent regressions
ENH: pd.NamedAgg forwards *args and **kwargs to aggfunc Apply Apply, Aggregate, Transform, Map Enhancement Groupby
Fix #60766:.map,.apply would convert element type for extension array Apply Apply, Aggregate, Transform, Map Bug pyarrow dtype retention op with pyarrow dtype -> expect pyarrow result
#61396 by pedromfdiogo was closed Oct 5, 2025 Loading… updated Oct 5, 2025
4 of 5 tasks
BUG: Add PyArrow datelike type support for Apply, Aggregate, Transform, Map Arrow pyarrow functionality Bug
map() Apply #61644 by KevsterAmp was closed Sep 10, 2025 Loading… updated Sep 10, 2025
4 of 5 tasks
BUG: groupby.agg should always agg API Design Apply Apply, Aggregate, Transform, Map Enhancement Groupby Needs Discussion Requires discussion from core team before further action
CLN: Enforce deprecation of arg in Series.map Apply Apply, Aggregate, Transform, Map Clean Series Series data structure
API: Rename Internal Consistency of API/Behavior Apply Apply, Aggregate, Transform, Map Deprecate Functionality to remove in pandas
arg to func in Series.map API - Consistency ENH: Allow Apply, Aggregate, Transform, Map Stale
s.map(d, na_action='raise') Apply #60482 by kopytjuk was closed May 21, 2025 Loading… updated Jul 23, 2025
2 of 4 tasks
DOC: Add note on inference behavior of apply with result_type='expand' Apply Apply, Aggregate, Transform, Map Docs Stale
#61552 by pinkgradient was closed Jul 15, 2025 Loading… updated Jul 15, 2025
ENH: Support third-party execution engines in Series.map Apply Apply, Aggregate, Transform, Map
#61467 by datapythonista was merged May 27, 2025 Loading… updated May 27, 2025
5 tasks done
DOC: Restructure and expand UDF page Apply Apply, Aggregate, Transform, Map Docs
#61470 by datapythonista was merged May 27, 2025 Loading… updated May 27, 2025
Backport PR #60636 on branch 2.3.x (TST(string dtype): Resolve xfail with apply returning an ndarray) Apply Apply, Aggregate, Transform, Map Strings String extension data type and string data Testing pandas testing functions or related to the test suite
TST(string dtype): Resolve xfail with apply returning an ndarray Apply Apply, Aggregate, Transform, Map Strings String extension data type and string data Testing pandas testing functions or related to the test suite
TST: Remove test_apply_mutate.py Apply Apply, Aggregate, Transform, Map Groupby Testing pandas testing functions or related to the test suite
DEPR: Enforce deprecation of include_groups in groupby.apply Apply Apply, Aggregate, Transform, Map Deprecate Functionality to remove in pandas Groupby
ENH: numba apply supports positional arguments passed as **kwargs Apply Apply, Aggregate, Transform, Map Enhancement Groupby numba numba-accelerated operations
DEPR: Update groupby.apply DeprecationWarning to FutureWarning Apply Apply, Aggregate, Transform, Map Groupby Warnings Warnings that appear or should be added to pandas
String dtype: allow string dtype for non-raw apply with numba engine Apply Apply, Aggregate, Transform, Map backported numba numba-accelerated operations Strings String extension data type and string data
BUG: fix treatment of NaNs when .apply() function is used on categorical columns. Apply Apply, Aggregate, Transform, Map Categorical Categorical Data Type
DEPR: DataFrameGroupBy.apply operating on the group keys Apply Apply, Aggregate, Transform, Map Deprecate Functionality to remove in pandas Groupby
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