一、使用while循环输入 1 2 3 4 5 6 8 9 10

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time: 2021/5/6  下午 10:39
# @File: practice1.py
# @Software: PyCharm

# 使用while循环输入 1 2 3 4 5 6  8 9 10
n = 1
while n < 11:
    if n == 7:
        n = n+1
        print(' ')
        continue
    print(n)
    n = n + 1
print(end='\n')

二、求1-100的所有数的和

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time: 2021/5/6  下午 10:49
# @File: practice2.py
# @Software: PyCharm

#求1-100的所有数的和
n = 1
s = 0
while n < 101:
    s = s+n
    n = n+1
print(s)

三、输出 1-100 内的所有奇数

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time: 2021/5/6 下午 10:53
# @File: practice3.py
# @Software: PyCharm

# 输出 1-100 内的所有奇数
n = 1
while n < 101:
    if n % 2 == 0:
        n = n + 1
        continue
    print(n)
    n = n + 1
print(end='')

四、输出 1-100 内的所有偶数

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time: 2021/5/6 下午 11:01
# @File: practice4.py
# @Software: PyCharm

# 输出 1-100 内的所有偶数
n = 1
while n < 101:
    if n % 2 != 0:
        n = n + 1
        continue
    print(n)
    n = n + 1
print(end='')

五、求1-2+3-4+5 … 99的所有数的和

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time: 2021/5/6 下午 11:02
# @File: practice5.py
# @Software: PyCharm

# 求1-2+3-4+5 ... 99的所有数的和

n = 1
s = 0
while n < 100:
    if n % 2 != 0:
        s = s + n
        n = n + 1
        continue
    else:
        s = s - n
        n = n + 1
print(s)
print(end='\n')

六、用户登陆（三次机会重试）

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time: 2021/5/7 下午 8:04
# @File: practice6.py
# @Software: PyCharm


i = 1
while i < 4:
    username = input("请输入用户名：")
    pwd = input("请输入密码：")
    if username == 'zoey' and pwd == '123456':
        print("登录成功！")
        break
    else:
        print("用户名或密码错误！")
        i = i + 1