Issues

• [PERF] bn.nammax/nanmin is ~70% slower on latest conda-forge build

  pydata/bottleneck#600 · Filter by author rhshadrach opened on Sep 19, 2026

• REL: new release needed

  Task

  pydata/bottleneck#591 · Filter by author neutrinoceros opened on Sep 12, 2026
  3

• BUG: test flakiness observed in free-threaded Python

  pydata/bottleneck#574 · Filter by author neutrinoceros opened on Jun 8, 2026
  1

• Py_MOD_GIL_NOT_USED declared but global state unprotected for free-threading

  pydata/bottleneck#532 · Filter by author devdanzin opened on Mar 29, 2026

• error_converting + TYPE_ERR clobbers original exception (~15 sites)

  pydata/bottleneck#531 · Filter by author devdanzin opened on Mar 29, 2026

• Module object leaked on import_array/intern_strings failure in all PyInit functions

  pydata/bottleneck#530 · Filter by author devdanzin opened on Mar 29, 2026

• BUFFER_NEW macro: unchecked malloc inside GIL-released region

  pydata/bottleneck#529 · Filter by author devdanzin opened on Mar 29, 2026

• PyArray_Ravel unchecked in iterators.h init_iter_all — NULL dereference and ref leak

  Bug

  pydata/bottleneck#528 · Filter by author devdanzin opened on Mar 29, 2026

• mm_new/mm_new_nan: three unchecked malloc calls — segfault on OOM

  Bug

  pydata/bottleneck#526 · Filter by author devdanzin opened on Mar 29, 2026

• move_median MEMORY_ERR without return — segfault under OOM

  pydata/bottleneck#519 · Filter by author devdanzin opened on Mar 29, 2026
  6

• Umbrella issue: bottleneck C Extension Analysis Report

  pydata/bottleneck#518 · Filter by author devdanzin opened on Mar 29, 2026
  8

• Where is bottleneck.move_quantile?

  bug
  pydata/bottleneck#517 · Filter by author liyqxtu opened on Mar 27, 2026
  1

• BLD: adopting the meson build backend

  pydata/bottleneck#516 · Filter by author neutrinoceros opened on Mar 26, 2026
  8

• [BUG] move_sum returns a negative value for a sum over a pandas Series with all non-negative values

  bug
  pydata/bottleneck#480 · Filter by author amritprasad opened on Jul 20, 2025

• [SUGGESTION] adding types stubs

  pydata/bottleneck#479 · Filter by author OutSquareCapital opened on Jun 5, 2025
  1

• [BUG]move_rank is much slower than pd.rolling(window).rank() when window is a large value(>1000)

  bug
  pydata/bottleneck#466 · Filter by author sysy007uuu opened on Dec 4, 2024

• Catastrohpic accuracy loss in large float32 array for nanmean and nanstd

  bug
  pydata/bottleneck#462 · Filter by author prutschman-iv opened on Oct 15, 2024
  2

• Implicit fallthroughs prevent compiler warning enablement

  bug
  pydata/bottleneck#455 · Filter by author r-barnes opened on Jun 26, 2024
  1

• ADD a 'move_apply' function

  bug
  pydata/bottleneck#452 · Filter by author paulinesimon97 opened on Jun 10, 2024

• 2D window implementation

  bug
  pydata/bottleneck#448 · Filter by author as18g13 opened on May 4, 2024

• Seeking advice on implementing certain operators on GPU

  pydata/bottleneck#446 · Filter by author zjzjwang opened on Apr 17, 2024

• [BUG] bottleneck gives erroneous standard deviation in Pandas with float32 array.

  bug
  pydata/bottleneck#443 · Filter by author jamespreed opened on Feb 20, 2024
  4

• [ENHANCEMENT] move_rank is twice as slow as pandas.rolling.rank

  bug
  pydata/bottleneck#438 · Filter by author Odysseuspanos opened on Dec 13, 2023

• use move_mean and set window&min_count =1, diff result

  bug
  pydata/bottleneck#437 · Filter by author gucasbrg opened on Sep 6, 2023

• Ignore length check

  pydata/bottleneck#434 · Filter by author wukan1986 opened on Jul 12, 2023
  1