title: PyQt5: ModuleNotFoundError: No module named 'PyQt5'
body: <p>I have installed Python 3.7.1 and trying to run a form created using QTdesigner.But this error occurred.I have also installed PyQt5 module using </p>
  
  <pre><code>pip install PyQt5 
  </code></pre>
  
  <p>The error is:</p>
  
  <pre><code>from PyQt5 import QtCore, QtGui, QtWidgets   
  
  ModuleNotFoundError: No module named 'PyQt5'
  </code></pre>