题解 | 牛牛的绩点

import sys

var = input()
result = fen = 0
while(var != 'False'):
    if(var.isalpha()):
        if(var == 'F'):
            temp = 0
        else:
            temp = float(69 - ord(var))
    if(var.isdigit()):
        temp = temp * int(var)
        fen = fen + int(var)
        result = result + temp
    var = input()
result = result/fen
print('%.2f' %result)

为什么是用F啊还得专门写个if进去