title: NameError: name 'subprocess' is not defined
body: <p>I'm trying to make a rng from this website: <a href="http://jamesdotcom.com/?p=417" rel="nofollow">http://jamesdotcom.com/?p=417</a>.
  However when I run the following code:</p>
  
  <pre><code>captureImage = subprocess.Popen(
     [
         "fswebcam", "-r", "356x292", "-d", "/dev/video0", 
         "static.jpg", "--skip", "10"
     ], 
     stdout=devNull, stderr=devNull)
  captureImage.communicate()
  </code></pre>
  
  <p>I get the following error message:</p>
  
  <pre><code>NameError: name 'subprocess' is not defined
  </code></pre>
  
  <p>What should I do? Thanks</p>