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BUG: IntervalIndex.unique() only contains the first interval if all interval borders are negative Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Bug Interval Interval data type
BUG: Fix precision loss in DataFrame.combine_first Bug combine/combine_first/update NDFrame.combine, combine_first, update
BUG: Fix json_normalize 'meta' validation Bug Error Reporting Incorrect or improved errors from pandas IO JSON read_json, to_json, json_normalize
BUG/API: cast to nanos before writing datetimes to JSON Bug Datetime Datetime data dtype IO JSON read_json, to_json, json_normalize
BUG: define Library building on various platforms
__Pyx_PyUnstable_Object_IsUniqueReferencedTemporary for python<3.14 Bug Build BUG: groupby raises on non-C-contiguous masks Bug Groupby
#63148 by rhshadrach was merged Nov 20, 2025 Loading… updated Nov 20, 2025
1 of 6 tasks
BUG: fix SeriesGroupBy.plot does not respect cmap parameter Bug Groupby Stale Visualization plotting
#62671 by zhuoyahuang was closed Nov 19, 2025 Loading… updated Nov 19, 2025
2 of 5 tasks
BUG: ser.str.match with mismatched case/pat/flags Bug Strings String extension data type and string data
BUG: Fix convert_dtype complex Bug Complex Complex Numbers Dtype Conversions Unexpected or buggy dtype conversions
BUG: Take method of NumpyExtensionArray now returns another extension array with the correct dtype. Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Bug ExtensionArray Extending pandas with custom dtypes or arrays.
#62502 by aijams was merged Nov 16, 2025 Loading… updated Nov 16, 2025
5 tasks done
BUG: fix Series(extension array) + extension array values addition Bug ExtensionArray Extending pandas with custom dtypes or arrays.
DEPR/BUG: Do not ignore sort in concat for DatetimeIndex Bug Deprecate Functionality to remove in pandas Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#62843 by rhshadrach was merged Nov 5, 2025 Loading… updated Nov 6, 2025
1 of 5 tasks
BUG: Fix sorting behavior of DataFrame.join on list arguments Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode Sorting e.g. sort_index, sort_values
BUG: Validate numeric_only parameter in groupby aggregations Bug Error Reporting Incorrect or improved errors from pandas Groupby
BUG: Fix ArrowDtype.itemsize for fixed-width PyArrow types Arrow pyarrow functionality Bug
#62275 by meet-vasita was closed Oct 18, 2025 Loading… updated Oct 18, 2025
BUG: Raise ValueError on integer indexers containing NA; skip test for unsupported EAs(#56727) Bug ExtensionArray Extending pandas with custom dtypes or arrays. Stale Testing pandas testing functions or related to the test suite
#61465 by pelagiavlas was closed Oct 5, 2025 Loading… updated Oct 5, 2025
5 tasks done
Raise MergeError on mismatched signed/unsigned int merge keys Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
#61694 by RITAMIT2023 was closed Oct 5, 2025 Loading… updated Oct 5, 2025
BUG: fillna with DataFrame input should preserve dtype when possible Bug Dtype Conversions Unexpected or buggy dtype conversions Stale
#61742 by iabhi4 was closed Oct 5, 2025 Loading… updated Oct 5, 2025
4 tasks done
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