title: Trouble whit installation and importing in PyQt4
body: <p>I'm following a GUI aplication python course. And I can't handle with PyQt4.  </p>
  
  <p>I'm at manjaro linux, after some failed attempts, seems I have successfully installed PyQt4 and sis. But now, when trying to import, I can't.</p>
  
  <p>When I run: <i>import PyQt4</i> 
  Works perfectly.</p>
  
  <p>When I run: <i>from PyQt4 import *</i>
  Same, but I can't use the classes</p>
  
  <p>But, when I run: <i>from PyQt4 import QtGui, QtCore</i>
  This doesn't work.</p>
  
  <p>Message error:</p>
  
  <pre><code>Traceback (most recent call last):
    File "ejemplo_GUI.pyw", line 2, in &lt;module&gt;
      from PyQt4 import QtGui
  ImportError: cannot import name 'QtGui' from 'PyQt4' (unknown location)
  </code></pre>
  
  <p>I attempted to do the istallation process again, but the same error.</p>
  
  <p>Now, I download the data in site-package/PyQt4 from another source and I pasted it into the folder. It raises this errror:</p>
  
  <pre><code>&gt;&gt;&gt; from PyQt4 import QtGui
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  ImportError: cannot import name 'QtGui' from 'PyQt4' (/usr/lib/python3.7/site-packages/PyQt4/__init__.py)
  </code></pre>