title: Run another Python script in different folder
body: <p>How to run another python scripts in a different folder?</p>
  
  <p>I have main program:
  <code>calculation_control.py</code></p>
  
  <p>In the folder <code>calculation_folder</code>, there is <code>calculation.py</code></p>
  
  <p>How do I run <code>calculation_folder/calculation.py</code> from within <code>calculation_control.py</code>?</p>
  
  <p>So far I have tried the following code:</p>
  
  <pre><code>calculation_file = folder_path + "calculation.py"
  if not os.path.isfile(parser_file) :
  
      continue
  
  
  subprocess.Popen([sys.executable, parser_file])
  </code></pre>