성적입력받아 최대값과 최소값 차이 구하기

class Score:
    def __init__(self):
        self.jumsu=[]

    def input_gap(self):
        for i in range(0, 10):
            num = int(input("성적 입력 : "))
            self.jumsu.append(num)
            
    def high_score(self):
        high = 0
        for base in self.jumsu:
            if high < base:
                high = base
        return high

    def low_score(self):
        low = self.high_score()
        for base in self.jumsu:
            if low > base:
                low = base
        return low

    def gap_score(self):
        gap = self.high_score() - self.low_score()
        return gap

s = Score()
s.input_gap()
print("==> 최대값: %d 최소값: %d 차이값: %d"%(s.high_score(),s.low_score(),s.gap_score()))