python 练习题

1、使用while循环输入1 2 3 4 5 6 8 9 10

count = 0 
while count < 10:
    count =count + 1 
    if count < 7 or count > 7 :
        print(count)
    else:
        continue;

2、求1-100所有的和

count = 1
nmt = 0
while count <= 100:
    nmt = nmt + count
    count += 1
    print(nmt)

3、输出1-100所有的奇数

count = 1
while count < 100:
    count = count + 1 
    if (count% 2 ) == 1:
        print(count)

4、输出1-100所有的偶数

count = 1 
while count <= 100:
    count = count + 1 
    if (count % 2) == 0:
        print(count)

5、求1-2+3-4+5...+99的结果

count = 1
sum = 0

while count < 100:
    if count % 2 == 0:
        sum = sum - count
    else:
        sum = sum + count
    count += 1
print(sum)

 

5、用户登录，3次重试机会

count= 0
while count < 3:
    account = input ('请输入您的账号：')
    password = input('请输入您的密码：')
    if account == 'miss' and password == '123':
        print('登录成功')
    else:
        print('输入密码错误，您还有三次重试机会,三次输入错误后，会锁定账号！')
        count += 1
        if count == 3:
            print('您的账号被锁定，请重置联系管理员重置密码。')