[Tutor] pyMVPA and OSError

[Juli]

I am very much new to python, and thus I am likely to feel stupid  
about asking. But I need to get past this to continue with my work.
I need pyMVPA module to run some analysis on fMRI data, but as a start  
I want to at first play around with the sample data provided on pyMVPA  
website. I have downloaded Python2.6, my operating system is Mac  
Leopard (i get a depracation warning when I try to >>> import mvpa,  
which is not the problem, however, when I attempt to use the following  
line
 >>> import mvpa.suite as mvpa
which i assume to mean the same thing, I dont get deprecation warning,  
but I do get a bunch of errors as follows:
 >>> import mvpa.suite as mvpa

Traceback (most recent call last):
   File "<pyshell#14>", line 1, in <module>
     import mvpa.suite as mvpa
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/mvpa/suite.py", line 38, in <module>
     from mvpa.algorithms.cvtranserror import *
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/mvpa/algorithms/cvtranserror.py", line 15,  
in <module>
     from mvpa.measures.base import DatasetMeasure
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/mvpa/measures/base.py", line 31, in <module>
     from mvpa.clfs.stats import autoNullDist
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/mvpa/clfs/stats.py", line 772, in <module>
     if externals.exists('pylab'):
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/mvpa/base/externals.py", line 432, in exists
     exec _KNOWN[dep]
   File "<string>", line 1, in <module>
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/mvpa/base/externals.py", line 249, in  
__check_pylab
     import pylab as P
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/pylab.py", line 1, in <module>
     from matplotlib.pylab import *
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/matplotlib/pylab.py", line 206, in <module>
     from matplotlib import mpl  # pulls in most modules
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/matplotlib/mpl.py", line 2, in <module>
     from matplotlib import axis
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/matplotlib/axis.py", line 10, in <module>
     import matplotlib.font_manager as font_manager
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/matplotlib/font_manager.py", line 1297, in  
<module>
     _rebuild()
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/matplotlib/font_manager.py", line 1288, in  
_rebuild
     fontManager = FontManager()
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/matplotlib/font_manager.py", line 980, in  
__init__
     self.ttffiles = findSystemFonts(paths) + findSystemFonts()
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/matplotlib/font_manager.py", line 337, in  
findSystemFonts
     for f in get_fontconfig_fonts(fontext):
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/matplotlib/font_manager.py", line 298, in  
get_fontconfig_fonts
     pipe = subprocess.Popen(['fc-list', '', 'file'],  
stdout=subprocess.PIPE)
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/subprocess.py", line 621, in __init__
     errread, errwrite)
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/subprocess.py", line 1126, in _execute_child
     raise child_exception
OSError: [Errno 2] No such file or directory

-----

I am not sure why OSError is popping and I am sure I am doing  
something wrong, I just do not know enough to pinpoint what exactly.

Any feedback is appreciated. And I do once more apologize for asking  
very stupid questions.