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Pull requests: pandas-dev/pandas
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CI: enable doctest errors again + fixup categorical examples
CI
Continuous Integration
Docs
Strings
String extension data type and string data
BUG: Fix Series.str.contains with compiled regex on Arrow string dtype (#61942)
#61946
opened Jul 25, 2025 by
Aniketsy
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BUG: Fix TypeError in assert_index_equal when comparing CategoricalIndex with check_categorical=True and exact=False
Testing
pandas testing functions or related to the test suite
#61941
opened Jul 24, 2025 by
Aniketsy
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Updating error message to include more details about dataframe
Error Reporting
Incorrect or improved errors from pandas
#61929
opened Jul 23, 2025 by
hasanrashid
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3 of 5 tasks
CoW: add readonly flag to ExtensionArrays, return read-only EA/ndarray in .array/EA.to_numpy()
Copy / view semantics
#61925
opened Jul 22, 2025 by
jorisvandenbossche
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Draft
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
#61920
opened Jul 22, 2025 by
khemkaran10
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3 tasks done
DOC: mention .attrs are preserved in Parquet IO for pyarrow engine
Docs
IO Parquet
parquet, feather
#61912
opened Jul 20, 2025 by
imramraja
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1 of 2 tasks
BUG: .describe() doesn't work for EAs #61707
Bug
ExtensionArray
Extending pandas with custom dtypes or arrays.
#61910
opened Jul 20, 2025 by
kernelism
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5 tasks done
BUG: Raise ParserWarning when on_bad_lines is callable and index_col is set (GH#61882)
#61902
opened Jul 19, 2025 by
AbhijitPatill
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5 tasks done
BUG FIX: to_json() with JSON Table Schema work correctly with string dtype.
IO JSON
read_json, to_json, json_normalize
Strings
String extension data type and string data
#61900
opened Jul 18, 2025 by
khemkaran10
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2 of 5 tasks
DEPR: PeriodDtype.freq
Deprecate
Functionality to remove in pandas
Period
Period data type
#61897
opened Jul 18, 2025 by
jbrockmendel
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2 of 5 tasks
Set up ty in CI
CI
Continuous Integration
Typing
type annotations, mypy/pyright type checking
#61880
opened Jul 16, 2025 by
tqa236
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5 tasks
DOC: Document that str.match accepts a regular expression
API - Consistency
Internal Consistency of API/Behavior
API Design
Docs
#61879
opened Jul 16, 2025 by
hamdanal
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5 tasks
TST: add test for pandas testing functions or related to the test suite
dtype argument in str.decode
Testing
#61872
opened Jul 16, 2025 by
hippowm
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BUG FIX: None of the included dtypes present in df will raise ValueError with clear error message.
Error Reporting
Incorrect or improved errors from pandas
#61871
opened Jul 16, 2025 by
khemkaran10
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3 tasks done
BUG: Fix inconsistency with DateOffset near DST
Frequency
DateOffsets
#61870
opened Jul 16, 2025 by
arthurlw
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4 of 5 tasks
DOC: Clarify str.cat output for Index object (GH35556)
Docs
#61833
opened Jul 11, 2025 by
anvivats
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5 tasks done
TST: Adding tests for validating DataFrame.__setitem__ and .loc behavior
Testing
pandas testing functions or related to the test suite
#61822
opened Jul 10, 2025 by
niruta25
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2 of 5 tasks
DOC: Clarify broadcasting behavior when using lists in DataFrame arithmetic (GH18857)
Docs
#61820
opened Jul 9, 2025 by
Shashwat1001
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BUG: DataFrame.aggregate to preserve extension dtypes with callable functions
Arrow
pyarrow functionality
Bug
pyarrow dtype retention
op with pyarrow dtype -> expect pyarrow result
#61816
opened Jul 9, 2025 by
AdrianoCLeao
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3 of 5 tasks
DOC: Improve documentation for DataFrame.__setitem__ and .loc assignment from Series
Docs
#61804
opened Jul 7, 2025 by
niruta25
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3 of 5 tasks
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