title: Python/Pycharm, Ctrl-Space does not bring up code completion
body: <p>I have the following file.  Why does code completion not run when I press <code>Ctrl-Space</code> after the "r."?   It says "no suggestion" in a red box.  </p>
  
  <p>(The program as it is runs and puts out: 200)</p>
  
  <pre><code>__author__ = 'hape'
  
  import urllib.request
  import urllib.response
  
  print("Starting")
  r = urllib.request.urlopen("http://www.python.org")
  
  r.  &lt;------------ No code completion, why not?!
  
  print (r.getcode())
  </code></pre>
  
  <p>After the <code>r.</code>, code completion does not popup, why?</p>