class Value:
    def __init__(self, value, pos, next):
        self.position = pos
        self.value = value
        self.next = next

    def show_val(self):
        return self.value

    def show_next(self):
        return self.next

    def show_pos(self):
        return self.position

    def change_next(self):
        self.next += 1

class List(Value):
    def __init__(self):
        self.values = []
        self.values.append(Value(0, 0, 0))
        self.values.append(Value(0, 1, 0))

    def show(self):
        for i in self.values:
            print('Position:' +  str(Value.show_pos(i)))
            print('Value:' +  str(Value.show_val(i)))
            print('Next val: ' + str(Value.show_next(i)))








list = List()





list.show()