title: How call a python script from a python process
body: <p>I  have to call a long run process from a bottle script (web framework like Django).</p>
  
  <p>So in a bottle script i have </p>
  
  <pre><code>os.system("python /home/tom/Documents/proc_test/main.py")
  </code></pre>
  
  <p>Anyway the main.py script is not executed.
  How can i call a python script from another running python program?</p>
  
  <p>P.S: in python shell interpreter i have write os.system("python /home/tom/Documents/proc_test/main.py") and the file is called</p>