title: Python run system command and then exit... won't exit
body: <p>I have the following python code:</p>
  
  <pre><code>os.system("C:/Python27/python.exe C:/GUI/TestGUI.py")
  sys.exit(0)
  </code></pre>
  
  <p>It runs the command fine, and a window pops up. However, it doesn't exit the first script. It just stays there, and I eventually have to force kill the process.  No errors are produced.  What's going on?</p>