title: How to get a single value from a pymongo query of a mongodb in python?
body: <p>I'm trying to use pymongo. Everything is ok so far, I can connect to mongodb, insert and make queries. The problem i'm facing is getting data from <code>find()</code> into a python array. </p>
  
  <p>This is my code</p>
  
  <pre><code>&gt;&gt;&gt; a = db.sensor.find({'sensor_id':3})
  &gt;&gt;&gt; a
  &lt;pymongo.cursor.Cursor object at 0x637f70&gt;
  &gt;&gt;&gt; for bla in a:
  ...     print bla
  ... 
  {u'date': datetime.datetime(2013, 3, 4, 21, 8, 23, 907000), u'_id': ObjectId('51350d4772ab8a691c370453'), u'sensor_id': 3, u'value': -1625.0}
  {u'date': datetime.datetime(2013, 3, 4, 21, 20, 12, 694000), u'_id': ObjectId('5135100c72ab8a695b54a4f3'), u'sensor_id': 3, u'value': -1875.0}
  {u'date': datetime.datetime(2013, 3, 4, 21, 22, 4, 985000), u'_id': ObjectId('5135107c72ab8a69851a5a95'), u'sensor_id': 3, u'value': -1812.0}
  {u'date': datetime.datetime(2013, 3, 4, 21, 26, 11, 758000), u'_id': ObjectId('5135117372ab8a69b285b4c7'), u'sensor_id': 3, u'value': -1312.0}
  </code></pre>
  
  <p>Is there a way to make something like <code>myValues[i] = bla.value</code>?</p>