All pull requests

Pull requests

• BUG: keep row order within duplicate keys for index joins with an empty side; document merge row order (GH#37927)

  BugDocsReshaping
  #71455·jbrockmendel opened Oct 21, 2026Member·

  ·
  1

• BUG: equal-but-differently-hashed keys matched at random in object hash tables (GH#43581)

  AlgosBugIndexing
  #71454·jbrockmendel opened Oct 21, 2026Member·

  ·
  1

• BUG: to_numeric leading "+" value not correctly rounded (GH#44145)

  BugDtype Conversions
  #71453·jbrockmendel opened Oct 21, 2026Member·

  ·
  1

• DOC: document that registered accessors are not cached (GH#32678)

  AccessorsDocs
  #71452·jbrockmendel opened Oct 21, 2026Member·

  ·
  1

• BUG: pivot_table margins drop rows with NA in a value column (GH#65765)

  Needs Issue Assignment
  #71451·Michael-Duck opened Oct 21, 2026·

  ·
  1

  1

• DOC: add the OpenSSF Scorecard badge to the README

  Docs
  #71450·fangchenli opened Oct 21, 2026Member·8 tasks·

  ·

• Fix groupby rolling apply index

  #71448·mayankdas2005 opened Oct 21, 2026·7 of 8 tasks·

  ·
  1

• Backport PR #71429 on branch 3.1.x (DOC: add dedicated 3.1 whatsnew section for dependencies/build related changes)

  Docs
  #71447·meeseeksmachine opened Oct 21, 2026Contributor·

  ·

  · 3.1

• Backport PR #71383 on branch 3.1.x (BUG: fix string regex operations with Python unicode escape sequence)

  ArrowRegressionStrings
  #71446·meeseeksmachine opened Oct 21, 2026Contributor·

  ·

  · 3.1

• Fix NaN-to-int64 overflow on RISC-V

  Needs Issue Assignment
  #71445·hrw opened Oct 21, 2026·4 of 7 tasks·

  ·
  1

  1

• improve errors for hashing nested Arrow types

  Needs Issue Assignment
  #71443·NiteshBhutani opened Oct 21, 2026·4 of 7 tasks·

  ·
  1

  1

• BUG: parallel read_csv raising released memoryview on free-threaded Python (GH#71418)

  BugFree ThreadingIO CSV
  #71442·jbrockmendel opened Oct 21, 2026Member·

  ·

  · 3.1
  1

• BUG: resample adds a spurious trailing bin when the last value is at the final instant of a bin (GH#41843)

  BugResample
  #71440·jbrockmendel opened Oct 21, 2026Member·

  ·

• BUG: respect axes.grid.axis/which rcParams in DataFrame.plot (GH#17725)

  BugVisualization
  #71438·jbrockmendel opened Oct 21, 2026Member·

  ·
  1

• BUG: bar/barh subplots titled with column names unlike other plot kinds (GH#15693)

  BugVisualization
  #71437·jbrockmendel opened Oct 21, 2026Member·

  ·
  1

• BUG: regular time series misplaced after irregular one on shared x axis (GH#14322)

  BugVisualization
  #71436·jbrockmendel opened Oct 21, 2026Member·

  ·
  1

• Doc arrow to pandas

  #71433·inshrashaikh opened Oct 21, 2026·1 task done·

  ·
  1

• BUG: HDFStore.select evaluates a | b in <long list> as an AND

  #71432·NodeX-AR opened Oct 21, 2026Contributor·6 tasks done·

  ·
  1

  5

• BUG: Styler title-mode tooltips misplaced or IndexError when rows are hidden

  #71431·NodeX-AR opened Oct 21, 2026Contributor·6 tasks done·

  ·
  1

  1

• BUG: fix border shorthand classification for color names containing unit substrings

  Needs Issue Assignment
  #71419·A-Raphie opened Oct 21, 2026·

  ·
  1

  1

• BUG: Series.plot.hist draws empty bars for datetime data (GH#17372)

  BugDatetimeVisualization
  #71416·jbrockmendel opened Oct 21, 2026Member·

  ·
  1

• TST: matplotlib.dates tickers label daily period-axis plots (GH#21860)

  TestingVisualization
  #71415·jbrockmendel opened Oct 21, 2026Member·

  ·
  1

• TST: groupby scatter plot draws each group once (GH#21963)

  GroupbyTestingVisualization
  #71414·jbrockmendel opened Oct 21, 2026Member·

  ·
  1

• TST: plot rejects a partial MultiIndex column label as x (GH#19544)

  TestingVisualization
  #71413·jbrockmendel opened Oct 21, 2026Member·

  ·
  1

• BUG: tuple of colors passed as color to a single-series plot raised (GH#18449)

  BugVisualization
  #71412·jbrockmendel opened Oct 21, 2026Member·

  ·
  1