title: Run a foreign exe inside a Python GUI (PyQt)
body: <p>I want to run an exe (for example calc.exe or cmd.exe) inside a python gui (python 2.7 | Windows | PyQt).
  Have anybody an idea how can i do this? 
  (something like that : <a href="https://www.youtube.com/watch?v=N6GWgxEvibE" rel="noreferrer">https://www.youtube.com/watch?v=N6GWgxEvibE</a>)</p>
  
  <p>Thanks all in advance.</p>