title: Python Popen difficulties: File not found
body: <p>I'm trying to use python to run a program.</p>
  
  <pre><code>from subprocess import Popen 
  sa_proc = Popen(['C:\\sa\\sa.exe','--?'])
  </code></pre>
  
  <p>Running this small snippit gives the error:</p>
  
  <blockquote>
    <p>WindowsError: [Error 2] The system cannot find the file specified</p>
  </blockquote>
  
  <p>The program exists and I have copy and pasted directly from explorer the absolute path to the exe. I have tried other things and have found that if I put the EXE in the source folder with the python script and use './sa.exe' then it works. The only thing I can think of is that I'm running the python script (and python) from a separate partition (F:).</p>
  
  <p>Any ideas?
  Thanks</p>