NumPy 1.21.3 Release Notes#

NumPy 1.21.3 is a maintenance release that fixes a few bugs discovered after 1.21.2. It also provides 64 bit Python 3.10.0 wheels. Note a few oddities about Python 3.10:

  • There are no 32 bit wheels for Windows, Mac, or Linux.

  • The Mac Intel builds are only available in universal2 wheels.

The Python versions supported in this release are 3.7-3.10. If you want to compile your own version using gcc-11, you will need to use gcc-11.2+ to avoid problems.


A total of 7 people contributed to this release. People with a “+” by their names contributed a patch for the first time.

  • Aaron Meurer

  • Bas van Beek

  • Charles Harris

  • Developer-Ecosystem-Engineering +

  • Kevin Sheppard

  • Sebastian Berg

  • Warren Weckesser

Pull requests merged#

A total of 8 pull requests were merged for this release.

  • #19745: ENH: Add dtype-support to 3 `generic/ndarray methods

  • #19955: BUG: Resolve Divide by Zero on Apple silicon + test failures…

  • #19958: MAINT: Mark type-check-only ufunc subclasses as ufunc aliases…

  • #19994: BUG: np.tan(np.inf) test failure

  • #20080: BUG: Correct incorrect advance in PCG with emulated int128

  • #20081: BUG: Fix NaT handling in the PyArray_CompareFunc for datetime…

  • #20082: DOC: Ensure that we add documentation also as to the dict for…

  • #20106: BUG: core: result_type(0, np.timedelta64(4)) would seg. fault.