title: Python subprocess.popen() without waiting
body: <p>I'm using Python 3.4.2 on Windows. In script1.py I'm doing this:</p>
  
  <pre><code>myProc = subprocess.Popen([sys.executable, "script2.py", "argument"])
  myProc.communicate()
  </code></pre>
  
  <p>it works and call script2.py . 
  The problem is that in script2.py there is a infinite loop (there must be) and the script1.py is waiting for script2.py to finish. How can I tell to script1.py to just call script2.py and don't wait for the process to finish?</p>