title: Within a dict, how to cut a out special value
body: <p>Hi I want ask how to effectively cut out the value <code>share_link</code></p>
  
  <p>My code</p>
  
  <pre><code>j = {
      u'items': [{u'annotations': [], u'share_link': u'a'},
                 {u'annotations': [], u'share_link': u'b'},
                 {u'annotations': [], u'share_link': u'c'},]
  }
  </code></pre>
  
  <p>My first try is <code>print "Value: %s" %  j.get('items')[0]['share_link']</code></p>
  
  <p>It works, but it is too slow, e.g. if <code>share_link</code> has 20 times: </p>
  
  <pre><code>print "Value: %s" %  j.get('items')[0]['share_link']
  print "Value: %s" %  j.get('items')[1]['share_link']
  ...
  print "Value: %s" %  j.get('items')[19]['share_link']
  </code></pre>
  
  <p>May I ask, is there a more effective way to cut out this value?</p>
  
  <p>Something like this:</p>
  
  <pre><code>b = j.findall(‘share_link’)
  
  # print every share_link value
  </code></pre>