title: cannot parse gmail Atom feed using python feedparser library
body: <p>I don't succeed to parse gmail Atom feed using feedparser with python 3.6 on windows 10 and neither on a raspberry pi running python 3.5 with ubuntu.</p>
  
  <p>For the gmail account I'd like to access atom feed, I have previously setup 2 step authentification and then a password for other device ( raspberry pi )</p>
  
  <p>When authentifying myself, I use the device password used successfully by ssmtp on raspberry pi to send emails from that account.
  With the same password, I also succeed to get the atom feed from firefox, but I guess it is still an authentification problem.</p>
  
  <p>Here is the code executed and the error message on win10 with python 3.6 :</p>
  
  <pre><code>#!/usr/bin/env python
  import feedparser
  
  USERNAME = "user@gmail.com"
  PASSWORD = "password"
  response = feedparser.parse("https://" + USERNAME + ":" + PASSWORD + "@mail.google.com/gmail/feed/atom")
  unread_count = int(response["feed"]["fullcount"])
  </code></pre>
  
  <p>Result:</p>
  
  <pre><code>Traceback (most recent call last):
    File "C:/Users/cedric/Google Drive/raspberry-pi/feedparser_example2.py", line 7, in &lt;module&gt;
      unread_count = int(response["feed"]["fullcount"])
    File "C:\Users\cedric\AppData\Local\Programs\Python\Python36\lib\site-packages\feedparser.py", line 356, in __getitem__
      return dict.__getitem__(self, key)
  KeyError: 'fullcount'
  </code></pre>
  
  <p>If I run it with raspberry pi with python3.5 here is the error message:</p>
  
  <pre><code>Traceback (most recent call last):
    File "/home/ced/Bureau/secu/feedparser_example.py", line 14, in &lt;module&gt;
      unread_count = int(response["feed"]["fullcount"])
    File "/usr/local/lib/python3.5/dist-packages/feedparser.py", line 357, in __getitem__
      return dict.__getitem__(self, key)
  KeyError: 'fullcount'
  </code></pre>
  
  <p>Does someone have an idea about this ?
  Thanks for your help</p>