title: Pyqt5 - input text from one py file and show in another py file using textbox
body: <p>I have a py file without any gui that randomise numbers every 2 seconds</p>
  
  <p>I want that those number will be shown in a textbox in other .py file like this:
  1
  2
  3
  4</p>
  
  <p>What is the best way to do it ?</p>