Issues

• BUG: DataFrame.to_string(max_cols=0) exceeds terminal width with uneven columns

  BugNeeds Triage
  pandas-dev/pandas#71603 · Filter by author mncrftfrcnm opened on Oct 25, 2026
  3

• BUG: pd.Series.map on dtype: datetime64[us] makes underlying data values array read-only - .transform does not

  ApplyCopy / view semanticsRegression
  pandas-dev/pandas#71567 · Filter by author echedey-ls opened on Oct 25, 2026 · 3.1.1
  1

• BUG: pandas 3.1.0 fails to build on s390x — 'load_unaligned' is not a member of 'xsimd' in the scalar fallback TU

  BugBuild
  pandas-dev/pandas#71548 · Filter by author HarikrishnanBalagopal opened on Oct 25, 2026 · 3.1.1
  2

  

• BUG: ffill/bfill on a pyarrow-backed column without missing values returns a view, so modifying the result changes the original

  BugCopy / view semantics
  pandas-dev/pandas#71515 · Filter by author maharanay22 opened on Oct 24, 2026 · 3.1.1
  3

• DOC: dev documentation (https://pandas.pydata.org/docs/dev/) returns 404

  CIDocs
  pandas-dev/pandas#71510 · Filter by author jdxwang opened on Oct 24, 2026
  1

• BUG: assert_frame_equal failure message hides float differences below display.precision

  BugOutput-FormattingTesting
  pandas-dev/pandas#71509 · Filter by author cjw296 opened on Oct 24, 2026 · 3.1.1
  1

  

• BUG: DataFrame.shift() with multiple periods returns incorrect columns for empty DataFrames

  BugNeeds Triage
  pandas-dev/pandas#71507 · Filter by author sauravsingla opened on Oct 24, 2026
  2

• BUG: AttributeError: 'NoneType' object has no attribute 'total_seconds' using win32timezone.TimeZoneInfo

  BugNeeds Triage
  pandas-dev/pandas#71485 · Filter by author Djfe opened on Oct 23, 2026
  1

• BUG: Series.str.repeat with a negative count raises ArrowInvalid for pyarrow-backed string dtype

  ArrowBugStrings
  pandas-dev/pandas#71482 · Filter by author Huang-404-Q opened on Oct 23, 2026
  

• BUG: Logical OR does not obey Kleene three-valued logic

  BugNA - MaskedArraysNumeric Operations
  pandas-dev/pandas#71478 · Filter by author warwickmm opened on Oct 22, 2026
  8

  

• RLS: 3.1.x releases

  Release
  pandas-dev/pandas#71477 · Filter by author jorisvandenbossche opened on Oct 22, 2026 · 3.1.1

• BUG: mean of column with numpy arrays stopped working in 3.1.0

  BugNeeds Triage
  pandas-dev/pandas#71476 · Filter by author wgifford opened on Oct 22, 2026 · 3.1.1
  1

• any() and all() methods return inconsistent types based on underlying storage - should they always return python bool ?

  Needs Triagepython_scalars
  pandas-dev/pandas#71475 · Filter by author Dr-Irv opened on Oct 22, 2026
  2

• BUG: dateutil timezones raise AttributeError with python-dateutil 3.0

  BugCompatNeeds DiscussionTimezones
  pandas-dev/pandas#71459 · Filter by author Cha-Imaa opened on Oct 22, 2026 · 3.1.1
  9

• BUG: on RISC-V NaN goes to INT_MAX

  BugNeeds Triage
  pandas-dev/pandas#71444 · Filter by author hrw opened on Oct 21, 2026
  2

• ENH: Supporting the new np.minmax reduction (and backing ufunc) coming in numpy 2.6.0

  Compatufuncs
  pandas-dev/pandas#71380 · Filter by author ikrommyd opened on Oct 20, 2026
  3

  

• BUG/DEPR: setitem with range indexer does numpy-advanced indexing instead of orthogonal indexing (single block case)

  BugDeprecateIndexingNeeds Discussion
  pandas-dev/pandas#71378 · Filter by author jorisvandenbossche opened on Oct 20, 2026 · 3.2
  1

• BUG: tz-aware Timestamp with a year outside 1-9999 is stored as year 1970 or 1972 in Series/DatetimeIndex

  BugNeeds Triage
  pandas-dev/pandas#71371 · Filter by author Chaptyziok opened on Oct 20, 2026

• DOC: pyarrow.Array.to_pandas vs ArrowExtensionArray

  ArrowDocs
  pandas-dev/pandas#71307 · Filter by author 2xB opened on Oct 19, 2026
  2

  

• BUG: CSS border shorthand with a color like 'indigo' or 'aqua' loses color and width in Styler.to_excel

  BugStyler
  pandas-dev/pandas#71305 · Filter by author LemonCondor opened on Oct 19, 2026
  2

  

• BUG: reindex/get_indexer with method returns wrong positions when object-dtype target contains NaN

  BugNeeds Triage
  pandas-dev/pandas#71295 · Filter by author vaidehi-snk opened on Oct 18, 2026
  1

• BUG: Pandas Cut Assigns Incorrect Bin

  Bugcut
  pandas-dev/pandas#71282 · Filter by author manh4wk opened on Oct 17, 2026
  2

  

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

  BugStyler
  pandas-dev/pandas#71281 · Filter by author digit50 opened on Oct 17, 2026
  2

  

• BUG: to_stata %tw moves Dec 30/31 into week 1 of the next year

  BugIO Stata
  pandas-dev/pandas#71280 · Filter by author digit50 opened on Oct 17, 2026
  5

  

• BUG: read_sas drops trailing XPORT rows when a short record ends in blanks

  BugIO SAS
  pandas-dev/pandas#71279 · Filter by author digit50 opened on Oct 17, 2026