实现让用户不断的猜年龄，但只给最多3次机会，超过次数猜不对就退出程序。

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# __author__ = "Sandu"

my_age = 27
count = 0

while count < 3:
   guess_age = int(input("请输入您猜的年龄："))
   count += 1
   if guess_age > my_age:
      print("年龄猜大了")
      if count == 3:
         print("已经超过输入次数了")
   elif guess_age < my_age:
      print("年龄猜小了")
      if count == 3:
         print("已经超过输入次数了")
   else:
      print("恭喜你，猜对了！")
     break

############改良版本#####################

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# __author__ = "Sandu"

my_age = 27
count = 0
while count < 3:
   guess_age = int(input("请输入您猜的年龄："))
   if guess_age > my_age:
      print("年龄猜大了")
   elif guess_age < my_age:
      print("年龄猜小了")
   else:
      print("恭喜你，猜对了！")
      break
   count += 1
else:
   print("已经超过输入次数了")