All pull requests

Pull requests

• TST: add read_csv tests for decimal and thousands with nullable dtypes (GH#52086)

  #1451·xirafa opened Oct 11, 2026·

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• Backport PR #68930 on branch 3.1.x (BUG: DataFrame.isetitem with an out-of-order loc corrupted the block structure)

  #1450·xirafa opened Oct 11, 2026·

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• Backport PR #68641 on branch 3.1.x (BUG: DataFrame axis=1 reductions accumulated in each block's own dtype (GH#51474))

  #1449·xirafa opened Oct 10, 2026·

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• TST: pin concat(union_categories=True) with empty categories of differing dtype (GH#23242)

  #1448·xirafa opened Oct 10, 2026·

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• BUG: DataFrame.compare upcasting from equal values in dropped rows (GH#39899)

  #1447·xirafa opened Oct 10, 2026·

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• BUG: mixed-dtype rows hold NumPy scalars under future.python_scalars (GH#13468)

  #1446·xirafa opened Oct 10, 2026·

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• BUG: stack stored NA labels in the result's MultiIndex levels (GH#40366)

  #1445·xirafa opened Oct 10, 2026·

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• BUG: replace with None cast unmatched same-dtype columns to object (GH#30512)

  #1444·xirafa opened Oct 10, 2026·

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• BUG: to_numeric with datetime-like scalars (GH#43280)

  #1443·xirafa opened Oct 10, 2026·

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• TST: cover ordered flag of pyarrow dictionary dtype (GH#58152)

  #1442·xirafa opened Oct 10, 2026·

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• BUG: don't let dtype undo parse_dates in read_csv (GH#57512)

  #1441·xirafa opened Oct 10, 2026·

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• TST: add test for all-null object column round-trip with orient="table" (GH#51375)

  #1440·xirafa opened Oct 10, 2026·

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• BUG: \\s and \\S in str regex methods missing Python whitespace characters for pyarrow-backed strings

  #1439·xirafa opened Oct 10, 2026·

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• BUG: merge_asof with empty left and right_index returns right's index (GH#41171)

  #1438·xirafa opened Oct 10, 2026·

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• TST: cover Kleene any/all(axis=1, skipna=False) on boolean dtypes (GH#57171)

  #1437·xirafa opened Oct 10, 2026·

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• TST: add regression test for weekly resample at an ambiguous midnight (GH#51211)

  #1436·xirafa opened Oct 10, 2026·

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• TST: concat keeps pd.NA in all-NA object columns (GH#61303)

  #1435·xirafa opened Oct 10, 2026·

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• TST: idxmax/idxmin(axis=1) preserve the columns' dtype (GH#56272)

  #1434·xirafa opened Oct 10, 2026·

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• TST: astype from strings with mixed ISO precision to datetime64 (GH#53127)

  #1433·xirafa opened Oct 10, 2026·

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• BUG: to_json dropped nanoseconds of Timestamps serialized as objects (GH#53473)

  #1432·xirafa opened Oct 10, 2026·

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• BUG: MultiIndex lookups with tuples of a different length (GH#50293)

  #1431·xirafa opened Oct 10, 2026·

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• DOC: Display one argument per line for long signatures

  #1430·xirafa opened Oct 10, 2026·

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• POC: Resolve discrepencies between regex engines

  #1429·xirafa opened Oct 10, 2026·

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• TST: cover DataFrame.value_counts with unobserved categorical combination (GH#44001)

  #1428·xirafa opened Oct 10, 2026·

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• BUG: DataFrame.hist(by=) plotting the numeric grouping column (GH#41188)

  #1427·xirafa opened Oct 10, 2026·

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