title: Installing Matplotlib - errors importing numpy in test command
body: <p>I'm having trouble getting matplotlib up and running.  I've downloaded it, but when I try to run the test command <code>python -c 'import matplotlib; print matplotlib.__version__, matplotlib.__file__'</code> I get the following errors</p>
  
  <pre><code>Traceback (most recent call last):
    File "&lt;string&gt;", line 1, in &lt;module&gt;
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/__init__.py", line 135, in &lt;module&gt;
      from matplotlib.rcsetup import (defaultParams,
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/rcsetup.py", line 19, in &lt;module&gt;
      from matplotlib.colors import is_color_like
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/colors.py", line 52, in &lt;module&gt;
      import numpy as np
  ImportError: No module named numpy
  </code></pre>
  
  <p>I know I have numpy installed, as I've used numpy and can work with it.  <code>import numpy</code> in the python shell works just fine.</p>
  
  <p>Maybe this is a PATH issue, but I'm not really sure.</p>
  
  <p>Thanks</p>