1、使用while循环输入1 2 3 4 5 6  8 9 10

#使用while循环输入1 2 3 4 5 6  8 9 10n = 1while n <= 10:    if n != 7:        print (n)    n += 1

 

2、求1—100的所用数的和

#求1—100的所用数的和n = 1m = 0while n <= 100:    m += n    n += 1print (m)

3、输出1—100内的所用奇数

#输出1—100内的所用奇数n = 1while n <= 100:    if n%2 != 0:        print (n)    n += 1

4、输出1—100内的所用偶数

#输出1—100内的所用偶数n = 1while n <= 100:    if n%2 ==0:        print (n)    n += 1

5、求1-2+3-4+5-6+7-8 ... 99的所用数的和

#求1-2+3-4+5-6+7-8 ... 99的所用数的和n = 1m = 0while n <100:    if n%2 != 0:        m += n    else:        m -= n    n += 1print (m)

6、用户登陆（有三次机会重试）

#用户登陆（有三次机会重试）n = 1while n <=3:    name = input（“please enter name")    pwd = input ("please enter password")    if name == "kingo" and pwd == "kingo":        print ("welcome, kingo!")        break;    else:        print ("name or password is wrong!")    n += 1else:    print ("the times is over!")