What is it?
Pythran is a Python to c++ compiler for a subset of the Python language, with a focus on scientific computing. It takes a Python module annotated with a few interface description and turns it into a native python module with the same interface, but (hopefully) faster.
It is meant to efficiently compile scientific programs, and takes advantage of multi-cores and SIMD instruction units.
Pythran supports Python 2.7 and also has a beta Python 3 support.
Pythran sources are hosted on https://github.com/serge-sans-paille/pythran.
Pythran releases are hosted on http://pypi.python.org/pypi/pythran.
Pythran is available through Conda on https://conda.anaconda.org/serge-sans-paille.
Pythran depends on a few Python modules and several C++ libraries. On a debian-like platform, run:
$> sudo apt-get install libgmp-dev libblas-dev $> sudo apt-get install python-dev python-ply python-networkx python-numpy
$> pip install pythran
Using a private debian repo
Add serge_sans_paille's debian server to your source.list, following the instruction given in http://serge.liyun.free.fr/serge/debian.html
Run the classic:
$> sudo apt-get update $> sudo apt-get install pythran
conda, following the instruction given in http://conda.pydata.org/docs/install/quick.html
$> conda install -c serge-sans-paille pythran
Using brew (http://brew.sh/):
$> brew install gmp $> brew install cmake $> easy_install pip $> pip install numpy pythran
Depending on your setup, you may need to add the following to your \~/.pythranrc`` file:
[compiler] CXX=g++-4.9 CC=gcc-4.9
$> yaourt -S python2-pythran-git
Using WinPython (http://winpython.github.io), start the WinPython prompt and run:
% pip install pythran
See MANUAL file.
A simple pythran input could be
""" Naive dotproduct! Pythran supports numpy.dot """ #pythran export dprod(int list, int list) def dprod(l0,l1): """WoW, generator expression, zip and sum.""" return sum(x * y for x, y in zip(l0, l1))
To turn it into a native module, run:
$> pythran dprod.py
That will generate a native dprod.so that can be imported just like the former module:
$> python -c 'import dprod' # this imports the native module instead
The user documentation is available in the MANUAL file from the doc directory.
The developer documentation is available in the DEVGUIDE file from the doc directory. The also is a TUTORIAL file for those who don't like reading documentation.
A todo list is maintained in the eponymous TODO file.
The CLI documentation is available from the pythran help command:
$> pythran --help
Some extra developer documentation is also available using pydoc. Beware, this is the computer science incarnation for the famous Where's Waldo? game:
$> pydoc pythran $> pydoc pythran.typing
pythran/tests/cases/ directory from the sources.
Praise, flame and cookies:
- [email protected] -- register at http://www.freelists.org/list/pythran first!
- #pythran on FreeNode
- [email protected]
The mailing list archive is available at http://www.freelists.org/archive/pythran/.
See AUTHORS file.
See LICENSE file.