pycpuid: CPUID for Python // Bramz’ warehouse

pycpuid: CPUID for Python

pycpuid is a very simple Python extension. It reads the information available from the CPUID assembly instruction, and makes it available to any Python program. I needed it to decide on some codepath based on whether the box supported SSE2. In particular, I needed to know if I could import an extension module that was optimized with SSE2

import pycpuid
if pycpuid.HAS_SSE2EX:
    import foobar_sse2 as foobar
else:
    import foobar

I didn’t found anything alike, so I coded it myself. And here it is for the rest of you …

using it

There’s not much to it, really. pycpuid is just a bunch of module constants. Just import the module and access the constants. the HAS_FOOBARs are Boolean flags to indicate whether the feature is available. The constant features is a string that lists all the available features.

import pycpuid
print "has SSE2:", pycpuid.HAS_SSE2EX
print "all availabe features:", pycpuid.features

subversion repository

http://svn.bramz.net/pycpuid/

download

pycpuid-0-1-1.zip

building and installing

There’s two simple steps to it:

Unpack the source code into a temporary directory, or grab it from the repository
Enter setup.py install on the command line. If you’re doing this on a Windows box and things freak out because you don’t have a C++ compiler installed or properly configured, you might be interested in my five little steps how to use the Visual C++ 2005 Express compiler (which is availabe for free!)

license

pycpuid is licensed under the GNU Lesser General Public License (LGPL) so that you can import pycpuid in your Python code without it imposing any license restrictions on your code.

Bramz’ warehouse