Method add

recipes/Python/59884_RPN_Stack_class/recipe-59884.py:159–161

(self)

        #do some math
       
        def add(self):
                newx = self.gety() + self.getx()
                self.pop(2); self.push(newx)
               
        def sub(self):
                newx = self.gety() - self.getx()