lis = []
sum = 0
while True:
content = input("请输入成绩(格式如下张三_44),输入Q退出:")
if content == "Q":
break
else:
lis .append(content)
for i in lis:
s = i.split("_")
sum = sum + int(s[1])
print(sum/len(lis))
转载于:https://www.cnblogs.com/hadibingjing/p/10941605.html