title: Why isn't PyCharm's autocomplete working for libraries I install?
body: <p>PyCharm's autocomplete isn't working for installed libraries.  I have the following code:</p>
  <pre class="lang-py prettyprint-override"><code>from boto.emr.connection import EmrConnection
  conn = EmrConnection(aws_keys.access_key_id, aws_keys.secret_key)
  </code></pre>
  <p>I want the editor to tell me what methods I have available to me when I press <kbd>Ctrl</kbd>+<kbd>Space</kbd>.</p>
  <p>The boto library is installed in my environment, but it doesn't seem to be detected by PyCharm. How can I set this up correctly?</p>