code: def to_dict(self):
          
          result = {}
          for column_family_id, columns in six.iteritems(self._cells):
              for column_qual, cells in six.iteritems(columns):
                  key = _to_bytes(column_family_id) + b":" + _to_bytes(column_qual)
                  result[key] = cells
          return result
docs: Convert the cells to a dictionary.
  
          This is intended to be used with HappyBase, so the column family and
          column qualiers are combined (with ``:``).
  
          :rtype: dict
          :returns: Dictionary containing all the data in the cells of this row.