title: Embed a file line by line in Combo Box in Python Qt
body: <p>I am having a situation in which I have to fill <code>Combo Box</code> with data available in a file. Mine approach is</p>
  
  <pre><code>self.cmbBusListBox.addItem("Select ..")
  lines = [line.rstrip('\n') for line in open('i2coutput.cfg')]
        for line in lines:
              self.cmbBusListBox.addItem(line)
  self.cmbBusListBox.currentIndexChanged.connect(self.selectBusChange)
  </code></pre>
  
  <p>This process giving me error:</p>
  
  <pre><code>Traceback (most recent call last):
    File "I2CMain.py", line 3, in &lt;module&gt;
      from Py4 import QtGui, QtCore
  ImportError: No module named Py4
  </code></pre>
  
  <p>In any file handling process for data populating from file in <code>Combo Box</code> giving same error. 
  Please guide me. Thanks in advance. </p>