All pull requests

Pull requests

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

  BugIndexingInternals
  #71037·meeseeksmachine opened Oct 11, 2026Contributor·

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  · 3.1

• CI: Update pixi.lock

  CI
  #71035·github-actions[bot] opened Oct 11, 2026Bot·

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

  BugDtype Conversions
  #71033·jbrockmendel opened Oct 10, 2026Member·

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  1

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

  BugDtype Conversionsreplace
  #71032·jbrockmendel opened Oct 10, 2026Member·

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  1

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

  BugMissing-dataMultiIndexReshaping
  #71031·jbrockmendel opened Oct 10, 2026Member·

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  1

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

  BugDatetimeDtype ConversionsTimedelta
  #71030·jbrockmendel opened Oct 10, 2026Member·

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

  BugIndexingpython_scalars
  #71029·jbrockmendel opened Oct 10, 2026Member·

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  1

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

  BugDatetimeIO CSV
  #71026·jbrockmendel opened Oct 10, 2026Member·

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  1

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

  #71025·maharanay22 opened Oct 10, 2026Contributor·7 of 8 tasks·

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  1

• POC: Resolve discrepencies between regex engines

  #71023·rhshadrach opened Oct 10, 2026Member·

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  1

  4

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

  BugMultiIndex
  #71020·jbrockmendel opened Oct 10, 2026Member·

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  1

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

  BugIO JSONTimezones
  #71019·jbrockmendel opened Oct 10, 2026Member·

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  1

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

  IO CSVTesting
  #71012·jbrockmendel opened Oct 10, 2026Member·

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  1

• BUG: don't chain resample apply-fallback errors onto the aggregate error (GH#50980)

  BugError ReportingResample
  #71010·jbrockmendel opened Oct 10, 2026Member·

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  1

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

  BugVisualization
  #71009·jbrockmendel opened Oct 10, 2026Member·

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  1

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

  BugReshaping
  #71005·jbrockmendel opened Oct 10, 2026Member·

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  1

• BUG: report file line numbers in python-engine bad-line messages (GH#16286)

  BugError ReportingIO CSV
  #70997·jbrockmendel opened Oct 10, 2026Member·

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  1

• BUG: report file line numbers in C-engine bad-line messages (GH#16286)

  BugError ReportingIO CSV
  #70994·jbrockmendel opened Oct 10, 2026Member·

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• DOC: fix make.py --single for objects referenced by module path

  Awaiting Review
  #70992·Abhishek1106kr opened Oct 10, 2026·4 of 8 tasks·

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  1

• BUG: interpolate precision loss on nanosecond DatetimeIndex (GH#34601)

  BugDatetimeMissing-data
  #70989·jbrockmendel opened Oct 10, 2026Member·

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  1

• BUG: DataFrame.fillna with a duplicate-labeled Series (GH#36608)

  BugMissing-data
  #70984·jbrockmendel opened Oct 10, 2026Member·

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  1

• DOC: recommend batching when adding many rows (GH#35378)

  Docs
  #70983·jbrockmendel opened Oct 10, 2026Member·

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  1

  1

• BUG: interpolate ignored fill_value="extrapolate" for linear methods (GH#31949)

  BugMissing-data
  #70981·jbrockmendel opened Oct 10, 2026Member·

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  1

• DOC: drop "experimental" warnings from nullable and string dtype docstrings (GH#44293)

  DocsNA - MaskedArraysStrings
  #70980·jbrockmendel opened Oct 10, 2026Member·

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  1

• BUG: to_csv MultiIndex columns first row dropped by read_csv (GH#21995)

  BugIO CSV
  #70977·jbrockmendel opened Oct 10, 2026Member·

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  1