[Numpy-discussion] [ANN] python-blosc 1.0.5 released

Francesc Alted francesc at continuum.io
Sun Sep 16 06:44:13 EDT 2012

Announcing python-blosc 1.0.5

What is it?

A Python wrapper for the Blosc compression library.

Blosc (http://blosc.pytables.org) is a high performance compressor
optimized for binary data.  It has been designed to transmit data to
the processor cache faster than the traditional, non-compressed,
direct memory fetch approach via a memcpy() OS call.

Blosc works well for compressing numerical arrays that contains data
with relatively low entropy, like sparse data, time series, grids with
regular-spaced values, etc.

python-blosc is a Python package that wraps it.

What is new?

- Upgraded to latest Blosc 1.1.4.

- Better handling of condition errors, and improved memory releasing in
   case of errors (thanks to Valentin Haenel and Han Genuit).

- Better handling of types (should compile without warning now, at least
   with GCC).

For more info, you can see the release notes in:


More docs and examples are available in the Quick User's Guide wiki page:


Download sources

Go to:


and download the most recent release from there.

Blosc is distributed using the MIT license, see LICENSES/BLOSC.txt for

Mailing list

There is an official mailing list for Blosc at:

blosc at googlegroups.com

Francesc Alted

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