#/usr/bin/env python
input_number=19
number1=0
while number1 < 3:                                           #==>次数限制循环
    number=int(input("please input your number:"))  #==>注意python3.0默认输入的是字符串，需要int转换
    if number == input_number:
        break                                         #==>条件满足时结束循环
    elif number > input_number:
        print("the number you put is big")
        print("please input corret number")
    else:
        print("the number you put is small")
        print("please input corret number")
    number1 +=1
if number == input_number:
    print("you put is true")
else:
    print("too many times")

次数循环控制