All pull requests

Pull requests

• BUG: preserve IntEnum in DataFrame constructor when dtype=object

  #70795·tanveer-arch opened Oct 7, 2026·

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  1

• BUG: read_fwf ignoring comments that start outside every column

  #70776·Aarya2004 opened Oct 7, 2026Contributor·7 of 8 tasks·

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  1

• DOC: Fix docs signature for the Easter and Week constructors

  #70774·simranbajaj06 opened Oct 7, 2026·

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• BUG: str regex \w, \d, \s and \b only matching ASCII for pyarrow-back…

  #70773·maharanay22 opened Oct 7, 2026Contributor·6 of 7 tasks·

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  1

• DOC: document unit-preserving behaviour in timedelta arithmetic

  #70772·SudoKMaar opened Oct 7, 2026Contributor·2 tasks done·

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  1

• DOC: Fix docs signature for the HalfYearEnd and HalfYearBegin constructors

  #70771·SudoKMaar opened Oct 7, 2026Contributor·3 tasks done·

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• REF: build the DataFrame in ParserBase.read for the C and Python engines (GH#43135)

  IO CSVPerformanceRefactor
  #70769·jbrockmendel opened Oct 7, 2026Member·

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  1

• ENH: name the column, value and row when a read_csv dtype conversion fails (GH#53966)

  EnhancementError ReportingIO CSV
  #70767·jbrockmendel opened Oct 7, 2026Member·

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  1

• BUG: read_csv pyarrow engine silently wrapped out-of-range integer dtype (GH#38013)

  ArrowBugIO CSV
  #70765·jbrockmendel opened Oct 7, 2026Member·

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  1

• BUG: to_json(date_format="iso") segfault on failed datetime ISO conversion (GH#69461)

  BugIO JSON
  #70747·jbrockmendel opened Oct 6, 2026Member·

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  1

• ENH: Add SECURITY.md

  #70746·rhshadrach opened Oct 6, 2026Member·

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  5

• PERF: loc/iloc row + column-list result keeps a column-selection temporary alive (GH#69477)

  Copy / view semanticsIndexingPerformance
  #70742·jbrockmendel opened Oct 6, 2026Member·

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  1

• ENH: implement ExtensionArray.__array_function__ (GH#26380)

  CompatEnhancementExtensionArrayufuncs
  #70740·jbrockmendel opened Oct 6, 2026Member·

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• BUG: merge/join overwriting a non-key column named like the join key (GH#39192)

  BugReshaping
  #70737·jbrockmendel opened Oct 6, 2026Member·

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  1

• PERF: make ArrowExtensionArray.copy a real copy (GH#61930)

  ArrowCopy / view semanticsPerformance
  #70736·jbrockmendel opened Oct 6, 2026Member·

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  1

• BUG: merge with indicator on MultiIndex columns emits warnings (GH#49325)

  BugReshaping
  #70735·jbrockmendel opened Oct 6, 2026Member·

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  1

• BUG: DataFrame.any/all(skipna=False) raising TypeError for pyarrow columns with NA

  Awaiting Review
  #70723·maharanay22 opened Oct 6, 2026Contributor·6 of 7 tasks·

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  1

• BUG: merge key dtype depends on whether every key matches (GH#16480)

  BugDtype ConversionsReshaping
  #70722·jbrockmendel opened Oct 6, 2026Member·

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  2

• BUG: read_sas exhausted memory on a SAS7BDAT file claiming more rows than it holds

  BugIO SAS
  #70721·jbrockmendel opened Oct 6, 2026Member·

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  · 3.2

• BUG: Styler CSS rules exceed Chromium's 8192-selector limit

  #70713·jbrockmendel opened Oct 6, 2026Member·5 tasks done·

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  1

• BUG: Rolling.skew/kurt stuck at NaN or inf after an extremely large value

  #70638·jbrockmendel opened Oct 6, 2026Member·5 tasks done·

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• REF: use targeted checks instead of infer_dtype

  Refactor
  #70637·jbrockmendel opened Oct 6, 2026Member·

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• DOC: note that groupby sort=True raises on unsortable keys (GH#57525)

  DocsGroupby
  #70627·jbrockmendel opened Oct 6, 2026Member·

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  1

• ENH: resolve ambiguous DST results of round/floor/ceil from the original timestamp (GH#37592)

  EnhancementNeeds DiscussionTimezones
  #70625·jbrockmendel opened Oct 6, 2026Member·

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  · 3.2
  1

• ENH: add sum/prod/mean/median/std/var/sem/skew/kurt to Index (GH#50021)

  EnhancementIndexNeeds DiscussionReduction Operations
  #70622·jbrockmendel opened Oct 6, 2026Member·

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  1