code: def get_item(self, table_name, key, attributes_to_get=None,
                   consistent_read=False, object_hook=None):
          
          data = {'TableName': table_name,
                  'Key': key}
          if attributes_to_get:
              data['AttributesToGet'] = attributes_to_get
          if consistent_read:
              data['ConsistentRead'] = True
          json_input = json.dumps(data)
          response = self.make_request('GetItem', json_input,
                                       object_hook=object_hook)
          if not response.has_key('Item'):
              raise dynamodb_exceptions.DynamoDBKeyNotFoundError(
                  "Key does not exist."
              )
          return response
docs: Return a set of attributes for an item that matches
          the supplied key.
  
          :type table_name: str
          :param table_name: The name of the table containing the item.
  
          :type key: dict
          :param key: A Python version of the Key data structure
              defined by DynamoDB.
  
          :type attributes_to_get: list
          :param attributes_to_get: A list of attribute names.
              If supplied, only the specified attribute names will
              be returned.  Otherwise, all attributes will be returned.
  
          :type consistent_read: bool
          :param consistent_read: If True, a consistent read
              request is issued.  Otherwise, an eventually consistent
              request is issued.