title: No module named PyQt4 although it is installed
body: <p><strong>I want to run FlatCAM on MAC OS X El Capitan and it needs PyQt package. I installed PyQt4 using homebrew.</strong></p>
  <pre><code>brew install qt
  </code></pre>
  <p>Warning: qt-4.8.7_2 already installed</p>
  <pre><code>brew install pyqt
  </code></pre>
  <p>Warning: pyqt-4.11.4 already installed</p>
  <pre><code>brew install sip
  </code></pre>
  <p>Warning: sip-4.18.1 already installed</p>
  <pre><code>brew install PyQt --with-python
  </code></pre>
  <p>Warning: pyqt-4.11.4 already installed</p>
  <p><strong>Although these warnings, when I run FlatCAM, I take this error:</strong></p>
  <p><em>Traceback (most recent call last):
  File &quot;FlatCAM.py&quot;, line 2, in 
  from PyQt4 import QtGui
  ImportError: No module named PyQt4</em></p>
  <p><strong>Why it doesn't see PyQt4?</strong></p>