(self)
return self.value['operand'] == '' or self.value['operand'] is None
Returns true if operand has no value.
Returns true if operand has no value.
Returns true if operand has no value .
def _has_empty_value(self):
        """
        Returns true if operand has no value.
        """
        return self.value['operand'] == '' or self.value['operand'] is None
def _has_empty_value ( self ) : return self . value [ 'operand' ] == '' or self . value [ 'operand' ] is None