def operatorLabel( self, operator ):
        """
        Returns the label for the inputed operator.
        
        :return     <str>
        """
        for key, value in self._operatorMap.items():
            if ( value == operator ):
                return key
        return operator
def operatorLabel ( self , operator ) : for key , value in self . _operatorMap . items ( ) : if ( value == operator ) : return key return operator
Returns the label for the inputed operator.
        
        :return     <str>