title: Setting a variable in a QlineEdit PyQT
body: <p>I need to put a value of an element ( float) of a list into a QlineEdit of GUI i developed with Qt Designer.</p>
  
  <pre><code>raw = self.model_lineEdit.text()  
  print('raw : ', raw)
  ic,E = zip(*[ list(map(float,line.split(", "))) for line in raw.split("\n") ])
  E,ic = np.array(E),np.array(ic)
  self.Eoff1_lineEdit.setText(E[3]) 
  </code></pre>
  
  <p>Unfortunately, it does not work. Can someone help me please ?
  Thank you in advance and have a good day :) !</p>