title: ImportError: No module named py3compat
body: <p>ubuntu 14.04
  I am using Python 2.7.6
  I have already installed paramiko moudle </p>
  
  <p>for example:</p>
  
  <p>~/paramiko/demos$ python demo.py</p>
  
  <p>Traceback (most recent call last):
  File "demo.py", line 31, in 
  from paramiko.py3compat import input
  ImportError: No module named py3compat</p>
  
  <p>so I open the demo.py</p>
  
  <p>vim demo.py +31</p>
  
  <p>line31: from paramiko.py3compat import input     </p>