基础练习No1 循环

1、使用while循环输入 1 2 3 4 5 6 8 9 10

1 count = 0
2 while count < 10:
3     count += 1  # count = count + 1
4     if count == 7:
5         continue
6     print(count)

输出 1-100 内的所有奇数

 

 1 #方法一:
 2 count = 1
 3 while count < 101:
 4     print(count)
 5     count += 2
 6 #方法二:
 7 count = 1
 8 while count < 101:
 9     if count % 2 == 1:
10         print(count)
11     count += 1

求1-2+3-4+5 ... 99的所有数的和

1 sum = 0
2 count = 1
3 while count < 100:
4     if count % 2 == 0:
5         sum = sum - count
6     else:
7         sum = sum + count
8     count += 1
9 print(sum)

用户登陆(三次机会重试)

1 i = 0
2 while i < 3:
3     username = input('请输入账号:')
4     password = int(input('请输入密码:'))
5     if username == 'WuKongSir' and password == 123:
6         print('登录成功')
7     else:
8         print('登录失败请重新登录')
9     i += 1

 

posted @ 2019-06-14 16:19  WuKongSir  阅读(39)  评论(0)    收藏  举报