[Numpy-discussion] ANN: NumPy 1.9.0 release

Sebastian Berg sebastian at sipsolutions.net
Sun Sep 7 08:53:07 EDT 2014

On So, 2014-09-07 at 12:33 +0200, Julian Taylor wrote:
> Hello,
> We are proud to announce the 1.9.0 release of NumPy.

Awesome, thanks for the release management!

- Sebastian

> This release includes numerous performance improvements, most
> significantly the indexing code has been rewritten be a lot times
> faster for most cases and performance of using small arrays and scalars
> has almost doubled.
> Plenty of other functions have been improved too, nonzero, where,
> bincount, searchsorted, count_nonzero, floating point min/max, boolean
> argmin/argmax, triu/tril, masked sorting can be expected to perform
> significantly better in many cases.
> Also NumPy 1.9.0 releases the GIL for more functions, most notably
> indexing now releases it and the random modules state object has a
> private lock instead of using the GIL. This allows leveraging pure
> python threads more efficiently.
> In order to make working with arrays containing NaN values easier
> nanmedian and nanpercentile have been added which ignore these values.
> These functions and the regular median and percentile now also support
> generalized axis arguments that ufuncs already have, these allow
> reducing along multiple axis in one call.
> Please see the release notes for all the details. Please also take not
> of the many small compatibility changes and deprecation in the notes.
> https://github.com/numpy/numpy/blob/maintenance/1.9.x/doc/release/1.9.0-notes.rst
> The source tarballs and win32 binaries can be downloaded here:
> https://sourceforge.net/projects/numpy/files/NumPy/1.9.0
> Cheers,
> The NumPy Development Team
> _______________________________________________
> NumPy-Discussion mailing list
> NumPy-Discussion at scipy.org
> http://mail.scipy.org/mailman/listinfo/numpy-discussion

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