题解 | #牛牛的绩点#
牛牛的绩点
https://www.nowcoder.com/practice/de8bc3e736164786b07a4dd64ed172f7
绩点与等级的对应关系 = {
'A': 4.0,
'B': 3.0,
'C': 2.0,
'D': 1.0,
'F': 0
}
sum_grade = 0
sum_credit = 0
while True:
# 输入等级
grade = input()
if grade.lower() == 'false':
break
# 输入学分
credit = int(input())
sum_grade += credit * 绩点与等级的对应关系[grade]
sum_credit += credit
# 计算平均绩点
average_grade = sum_grade / sum_credit
print('%.2f' % average_grade)
