def _operator_handling(self, cursor):
        """Returns a string with the literal that are part of the operation."""
        values = self._literal_handling(cursor)
        retval = ''.join([str(val) for val in values])
        return retval
def _operator_handling ( self , cursor ) : values = self . _literal_handling ( cursor ) retval = '' . join ( [ str ( val ) for val in values ] ) return retval
Returns a string with the literal that are part of the operation.