title: virtualenv ImportError: No module named _struct
body: <p>I am trying to run virtualenv on fedora. I get the following output.</p>
  
  <p>in the same session I did PYTHONHOME=/usr/bin/python2.7 and PYTHONPATH=/lib/python2.7</p>
  
  <pre><code>Traceback (most recent call last):
    File "/usr/bin/virtualenv", line 7, in &lt;module&gt;
      from virtualenv import main
    File "/usr/lib/python2.7/site-packages/virtualenv.py", line 16, in &lt;module&gt;
      import base64
    File "/usr/lib64/python2.7/base64.py", line 9, in &lt;module&gt;
      import struct
    File "/usr/lib64/python2.7/struct.py", line 1, in &lt;module&gt;
      from _struct import *
  ImportError: No module named _struct
  </code></pre>