title: ImportError: No module named pbr after pip install successfully
body: <p>I have been using the following command line to instll prb package locally,</p>
  
  <p>pip install -t /data/python3.4/site-packages/  /data/pythonlibs/pbr-2.0.0-py2.py3-none-any.whl</p>
  
  <p>The process successfully. Afterwards, when I type <code>import pbr</code>, it still fails. What can be the possible reason for this failed installation process?</p>
  
  <p><a href="https://i.stack.imgur.com/Vq6UP.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Vq6UP.jpg" alt="enter image description here"></a></p>