title: How to fix a KeyError in django?
body: <p><code>print user_dic[id]</code> displays the right result <code>PersonA</code>. This is when I input the id manually.</p>
  
  <pre><code>user_stream = {u'2331449': u'PersonB', u'17800013': u'PersonA'}
  user_dic= {}
  for item in user_stream:
      user_dic[item['id']] = item['name']
  
  id = '17800013'
  print user_dic[id]  #returns the right value
  </code></pre>
  
  <p>However, when I try to put the <code>user_id</code> through a for loop that iterates through json I get an error: <code>KeyError at 17800013</code> for the line <code>name = user_dic[user_id]</code>. I don't understand why the <code>user_dic[id]</code> works when manually inputting the id, but <code>user_dic[user_id]</code> doesn't work when going through the for loop even though the input is the same. </p>
  
  <pre><code>#right fql query
  fql_query = "SELECT created_time, post_id, actor_id, type, updated_time, attachment FROM stream WHERE post_id in (select post_id from stream where ('video') in attachment AND source_id IN ( SELECT uid2 FROM friend WHERE uid1=me()) limit 100)"
  fql_var = "https://api.facebook.com/method/fql.query?access_token=" + token['access_token'] + "&amp;query=" + fql_query + "&amp;format=json"
  data = urllib.urlopen(fql_var)
  fb_stream = json.loads(data.read())
  
  fb_feed = []
  for post in fb_stream:
      user_id = post["actor_id"]
      name = user_dic[user_id]  #this is the line giving me trouble
      title = post["attachment"]["name"]
      link = post["attachment"]["href"]
      video_id = link[link.find('v=')+2 : link.find('v=')+13]
      fb_feed.append([user_id, name, title, video_id])
  </code></pre>