我无法访问某些gdata联系人属性,如gender

代码如下:

def fetch_feed(self):
        client = gdata.contacts.service.ContactsService()
        client.ClientLogin(username, password) #Will change to AuthSub later.
        query = gdata.contacts.service.ContactsQuery()
        query.max_results = 3000
        feed = client.GetContactsFeed(query.ToUri())
        memcache.set('feed',feed, 3600)
        return feed

feed = self.fetch_feed()
self.PrintFeed(feed)

def PrintFeed(self, feed):
        for entry in feed.entry:
            print entry.* #example... i can access properties such as entry.title, entry.id, entry.updated, but can't access a whole lot more.

我做错了什么,或者根本没做什么? 我在AppsAPI论坛上发布了同样的问题,只是为了澄清问题。

编辑 以下是我要导入的内容:

from google.appengine.api import memcache, users
from google.appengine.ext import db, webapp
from google.appengine.ext.webapp import util
import atom
import atom.url
import datetime
import gdata.alt.appengine

import gdata.contacts
import gdata.contacts.client
import gdata.contacts.data
import gdata.contacts.service
import gdata.client
import gdata.service
import settings

编辑2: 修正了qry输入错误后出现的错误:

Traceback (most recent call last):
  File "C:\Program Files\Google\google_appengine\google\appengine\ext\webapp\__init__.py", line 511, in __call__
    handler.get(*groups)
  File "C:\etrebug\main.py", line 55, in get
    feed = self.fetch_feed()
  File "C:\etrebug\main.py", line 67, in fetch_feed
    feed = client.get_contacts(qry)
  File "C:\etrebug\gdata\contacts\client.py", line 194, in get_contacts
    desired_class=desired_class, **kwargs)
  File "C:\etrebug\gdata\client.py", line 635, in get_feed
    **kwargs)
  File "C:\etrebug\gdata\client.py", line 276, in request
    version=get_xml_version(self.api_version))
  File "C:\etrebug\atom\core.py", line 516, in parse
    return _xml_element_from_tree(tree, target_class, version)
  File "C:\etrebug\atom\core.py", line 525, in _xml_element_from_tree
    if target_class._qname is None:
AttributeError: 'ContactsQuery' object has no attribute '_qname'