NumPy 1.22.3 Release Notes#

NumPy 1.22.3 is a maintenance release that fixes bugs discovered after the 1.22.2 release. The most noticeable fixes may be those for DLPack. One that may cause some problems is disallowing strings as inputs to logical ufuncs. It is still undecided how strings should be treated in those functions and it was thought best to simply disallow them until a decision was reached. That should not cause problems with older code.

The Python versions supported for this release are 3.8-3.10. Note that the Mac wheels are now based on OS X 10.14 rather than 10.9 that was used in previous NumPy release cycles. 10.14 is the oldest release supported by Apple.


A total of 9 people contributed to this release. People with a “+” by their names contributed a patch for the first time.

  • @GalaxySnail +

  • Alexandre de Siqueira

  • Bas van Beek

  • Charles Harris

  • Melissa Weber Mendonça

  • Ross Barnowski

  • Sebastian Berg

  • Tirth Patel

  • Matthieu Darbois

Pull requests merged#

A total of 10 pull requests were merged for this release.

  • #21048: MAINT: Use “3.10” instead of “3.10-dev” on travis.

  • #21106: TYP,MAINT: Explicitly allow sequences of array-likes in np.concatenate

  • #21137: BLD,DOC: skip broken ipython 8.1.0

  • #21138: BUG, ENH: np._from_dlpack: export correct device information

  • #21139: BUG: Fix numba DUFuncs added loops getting picked up

  • #21140: BUG: Fix unpickling an empty ndarray with a non-zero dimension…

  • #21141: BUG: use ThreadPoolExecutor instead of ThreadPool

  • #21142: API: Disallow strings in logical ufuncs

  • #21143: MAINT, DOC: Fix SciPy intersphinx link

  • #21148: BUG,ENH: np._from_dlpack: export arrays with any strided size-1…