while循环

While循环    最简单的例子

Count = 0

While true:

Print(“count:”,count)

Count = count + 1  #count  +=1

列子1

Age_of_oldboy =56

Count = 0   计数

While true：

If count ==3    执行3次退出

Break

Guess_age = int(input(“guess_age:”))

If guess_age ==age_of_oldboy :

Print(“yes you got it”)

Break       输入为真退出

Elif guess_age >age_of_oldboy:

Print(“think smaller”)

Else:

Print(“think bigger”)

Count +=1      计数

while列子2  优化版本

Age_of_oldboy =56

Count = 0   计数

While count < 3:

Guess_age = int(input(“guess_age:”))

If guess_age ==age_of_oldboy :

Print(“yes you got it”)

Break       输入为真退出

Elif guess_age >age_of_oldboy:

Print(“think smaller”)

Else:

Print(“think bigger”)

Count +=1      计数

Else:

Print(“you have tried too many times..fuck off”)