1.使用while循环输入1 2 3 4 5 6 8 9 10
代码语言:javascript复制#!/usr/bin/env python
#-*- coding:utf-8 -*-
a = 0
while True:
a = 1
if a == 7:
continue
print(a)
if a == 10:
break
2.求1-100的所有数的和
代码语言:javascript复制#!/usr/bin/env python
#-*- coding:utf-8 -*-
sum = 0
start = 1
while True:
sum = sum start
if start == 100:
break
start = 1
print(sum)
3.输出1-100内的所有奇数
代码语言:javascript复制#!/usr/bin/env python
#-*- coding:utf-8 -*-
start = 1
while True:
if start % 2 == 1:
print(start)
start = 1
if start > 100:
break
4.输出1-100内的所有偶数
代码语言:javascript复制#!/usr/bin/env python
#-*- coding:utf-8 -*-
start = 1
while True:
if start % 2 == 0:
print(start)
start = 1
if start > 100:
break
5.求1-2 3-4 5..99的所有数的和
代码语言:javascript复制#!/usr/bin/env python
#-*- coding:utf-8 -*-
start = 1
sum = 0
while start < 100:
if start % 2 == 1:
sum = sum start
else:
sum = sum - start
start = 1
print(sum)
显示等式验证方法:
代码语言:javascript复制#!/usr/bin/env python
#-*- coding:utf-8 -*-
s = ""
start = 1
sum = 0
while start < 100:
if start % 2 == 1:
if start == 1:
s = str(start)
else:
s = s " " str(start)
sum = sum start
else:
s = s "-" str(start)
sum = sum - start
start = 1
print(s)
print(sum
)
6.用户登陆(三次机会重试)
代码语言:javascript复制i = 1
while i < 4:
user = raw_input("UserName:")
pwd = raw_input("PassWord:")
if user == "alex" and pwd == "123":
print("true")
break
else:
print("flase")
i = 1