drama_lama.py

# Steps to monitor who removes you from their friends list on facebook:
# Grab the new Facebook Python-SDK from github.
# Modify & run the appengine+oauth example/demo as follows:
# -in facebookoauth.py define _parse_json & _dump_json
# -in user add two db.TextProperty fields: friends, unfriends
# -swap the HomeHandler class for below...
# -update template to display as desired.
# run & reload every few days and see who doesn't like you anymore.

class HomeHandler(BaseHandler):
    def get(self):
        unfriends = []
        friends = []
        friend_count = 0
        user = self.current_user
        if user:
            # grab current friends
            friends_d = json.load(urllib.urlopen(
                        "https://graph.facebook.com/me/friends?" +
                        urllib.urlencode(dict(access_token=user.access_token))))
            friends = friends_d['data']
            
            friend_count = len(friends)
            friend_ids = set([u['id'] for u in friends])

            # load current data.
            oldfriends = _parse_json(user.friends)
            oldfriend_ids = set([u['id'] for u in oldfriends])
            unfriends  = _parse_json(user.unfriends)
            unfriend_ids = set([u['id'] for u in unfriends])

            # find missing friends
            u_new = set()
            for u in oldfriend_ids - friend_ids:
                if not u in unfriend_ids: # again, really?
                    u_new.add(u)

            # put missing friends into unfriend list
            for u in oldfriends:
                if u['id'] in u_new:
                    unfriends.append(u)

            user.friends = _dump_json(friends)
            user.unfriends = _dump_json(unfriends)
            user.put()

        path = os.path.join(os.path.dirname(__file__), "oauth.html")
        args = {'current_user':self.current_user,
                'unfriends':unfriends,
                'friends':friends,
                'friend_count':friend_count,
               }
        self.response.out.write(template.render(path, args))

template.html

{% if unfriends %}
<p>Look who doesn't like you:
    <ul>
        {% for u in unfriends %} 
            <li><img src="http://graph.facebook.com/{{ u.id }}/picture"/>{{u.name}}</li>
        {%endfor%}
    </ul>
</p>
{%endif%}