python之循环1

循环：while，for

for 循环：

 for i in range（0,10,2）: 

     循环体

备注：range里面的2，是步长，就是 i 取值为：0 ，2,4,6,8；默认为1，for i   in range（10）==for i  in range （0,10）==for i  in range （0,10，1）

结束循环：break：结束当前循环

continue：跳出本次循环，进入下一次循环

写个循环：猜一个数字的大小

思路：给出一个数字猜大小，当猜的数字大于给出的数字，返回猜的数字过大；当猜的数字小于给出的数字，则返回猜的数字过小，当猜的数字等于给出的数字，则返回成功

猜的次数限制为3次，当第三次还猜不对的时，询问是否继续猜字游戏，当输入非‘n’和‘N’时，可以继续猜三次。

good_number=57
guess_count=0
while guess_count<3:
    guess_number=int(input('Please input your guess_number: '))
    if guess_number==good_number:
        print('Good!!!You got it !!!')
        break
    elif guess_number<good_number:
        print('Too bad!!!You guessed it was small.')
    else:
        print('Too bad!!!You guessed it was big.')

    guess_count+=1

    if guess_count==3:
        print('You have guessed wrong three times,do you want to keep guessing...')
        continue_game=input('If you want to continue playing,you can enter any character or enter directly;\n'
                            "If you do not want to continue playing, please enter 'n '.\n")
        if continue_game!='n'and continue_game!='N':
            guess_count=0