title: Get Data from Dict inside list inside dict
body: <p>I have a output value from ElasticSearch which is in this form</p>
  
  <pre><code>u'hits':
         {
            u'hits':
                [
                    {
                        u'_score': 1.0, u'_type': u'timer_data',
                        u'_id': u'AU_uJ1dk4uyHlwrlFlQv',
                        u'_source': {
                              u'std': u'0', u'upper': u'62.688',
                              u'lower': u'62.688', u'count_90': u'1',
                              u'tgt': u'duration', u'grp': u'request',
                              u'sum_90': u'62.688', u'sum': u'62.688',
                              u'median': u'62.688', u'count': u'1',
                              u'mean_90': u'62.688', u'sum_squares': u'3929.7853440000004',
                              u'ns': u'gunicorn', u'act': u'',
                              u'upper_90': u'62.688', u'sum_squares_90': u'3929.7853440000004',
                              u'count_ps': u'0.1', u'@timestamp': u'1442809600000',
                              u'mean': u'62.688'
                        },
                        u'_index': u'statsd-2015.09.21'
                    }
                ],
                u'total': 1, u'max_score': 1.0
            },
            u'_shards': {
                u'successful': 5, u'failed': 0, u'total': 5
            },
            u'took': 2, u'timed_out': False
        }
  </code></pre>
  
  <p>I want to access data inside u'_source' dictionary but cannot find any proper way other than following.</p>
  
  <pre><code>anoval = output[u'hits'][u'hits']
  print type(anoval)
  # print output[u'hits'][u'hits']
  anoval = anoval[0]
  print type(anoval)
  </code></pre>
  
  <p>I want to know if there is any other more efficient way to do this with elasticsearch outputs coming as dictionaries in python</p>