例子一：

# Author: Alex Chen

real_age = 45

count = 0
while True:
    if count == 3:
        break
    age = int(input("please input age:"))
    if age == real_age:
        print("cool, you got it.")
        break
    elif age > real_age:
        print("should be smaller.")
    else:
        print("should be bigger.")
    count += 1

例子二：优化版

# Author: Alex Chen

real_age = 45

count = 0
while count < 3:
    age = int(input("please input age:"))
    if age == real_age:
        print("cool, you got it.")
        break
    elif age > real_age:
        print("should be smaller.")
    else:
        print("should be bigger.")
    count += 1

例子三：

# Author: Alex Chen

real_age = 45

count = 0
while count < 3:
    age = int(input("please input age:"))
    if age == real_age:
        print("cool, you got it.")
        break
    elif age > real_age:
        print("should be smaller.")
    else:
        print("should be bigger.")
    count += 1
else:
    print("You have tried too many times, stopped.")

python中可以有while else的语法

例子四：优化版

# Author: Alex Chen

real_age = 45

count = 0
while count < 3:
    age = int(input("please input age:"))
    if age == real_age:
        print("cool, you got it.")
        break
    elif age > real_age:
        print("should be smaller.")
    else:
        print("should be bigger.")
    count += 1
    if count == 3:
        confirm = input("do you want to keep guess, please make your choose y/n:")
        if confirm != "n":
            count=0
        else:
            print("bye bye.")