Announcing Numexpr 2.1

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.

It wears multi-threaded capabilities, as well as support for Intel's
VML library (included in Intel MKL), which allows an extremely fast
evaluation of transcendental functions (sin, cos, tan, exp, log...)
while squeezing the last drop of performance out of your multi-core

Its only dependency is NumPy (MKL is optional), so it works well as an
easy-to-deploy, easy-to-use, computational kernel for projects that
don't want to adopt other solutions that require more heavy

What's new

The main feature of this version is that it adds a much needed
**compatibility for Python 3**

Many thanks to Antonio Valentino for his fine work on this.
Also, Christoph Gohlke quickly provided feedback and binaries for
Windows and Mark Wiebe and Gaƫtan de Menten provided many small
(but important!) fixes and improvements.  All of you made numexpr 2.1
the best release ever.  Thanks!

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:


You can get the packages from PyPI as well:


Share your experience

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

Enjoy data!

Francesc Alted

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