ANN: Numexpr 1.4.1 released

Francesc Alted faltet at
Wed Oct 20 19:03:56 CEST 2010

 Announcing Numexpr 1.4.1

Numexpr is a fast numerical expression evaluator for NumPy.  With it,
expressions that operate on arrays (like "3*a+4*b") are accelerated
and use less memory than doing the same calculation in Python.

What's new

This is a maintenance release.  On it, several improvements have been
done in order to prevent deadlocks in new threaded code (fixes #33).
Also the GIL is released now during computations, which should be
interesting for embedding numexpr in threaded Python apps.

In case you want to know more in detail what has changed in this
version, see:

or have a look at RELEASE_NOTES.txt in the tarball.

Where I can find Numexpr?

The project is hosted at Google code in:

And you can get the packages from PyPI as well:

Share your experience

Let us know of any bugs, suggestions, gripes, kudos, etc. you may


Francesc Alted

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