题解 | #牛牛的绩点#
牛牛的绩点
https://www.nowcoder.com/practice/de8bc3e736164786b07a4dd64ed172f7
dict1 = {'A': 4.0, 'B': 3.0, 'C': 2.0, 'D': 1.0, 'F': 0}
list1 = [] # 等级 * 学分 = 总成绩
list2 = [] # 学分数
while True:
grade = input()
if grade == 'False':
break
else:
score = int(input())
list1.append(dict1[grade] * score)
list2.append(score)
print('{:.2f}'.format(sum(list1) / sum(list2)))
