title: python can't find already installed Module
body: <p>Guys!
  I'm using python 2.7 in windows by personal Reason.
  Then I wanna use 'pymesh' library for some works.
  but although the 'pymesh' module is already installed by using </p>
  
  <pre><code>python setup.py install
  </code></pre>
  
  <p>, the python show me this error message</p>
  
  <blockquote>
    <p>Traceback (most recent call last):</p>
    
    <p>File "", line 1, in </p>
    
    <p>File "E:\ProgramData\Anaconda2\lib\site-packages\pymesh-0.1-py2.7.egg\pymesh__init__.py", line 18, in </p>
    
    <p>from .Mesh import Mesh</p>
    
    <p>File "E:\ProgramData\Anaconda2\lib\site-packages\pymesh-0.1-py2.7.egg\pymesh\Mesh.py", line 5, in </p>
    
    <p>import PyMesh</p>
    
    <p>ImportError: No module named PyMesh</p>
  </blockquote>
  
  <p>and because I thought that the reason of this error is I didn't build 'pymesh', I entered this code in CMD</p>
  
  <pre><code>python setup.py build
  </code></pre>
  
  <p>but the prompt also show me error message</p>
  
  <blockquote>
    <p>running build</p>
    
    <p>Overriding default build process</p>
    
    <p>error: [Error 2]</p>
  </blockquote>
  
  <p>so ... in this case , how can i fix this simple problem</p>