while循环语句

import time ##time详细时间模块
while 1==1:
	print(‘ok‘,time.time())

import time
a = 10
while a < 20:
	print(‘ok‘,time.time())
	a = a + 2 #######当循环到a+2将要等于20的前一个循环时，循环停止，开始输出下面的it is end....
print(‘it is end....‘)

import time
a = 10
while a < 20:
	print(a)
	a = a + 2 #######当循环到a+2等于或大于20的时候，循环停止，开始输出下面的it is end....
print(‘it is end....‘)

a = 1
while a < 11:
	if a == 7:
		pass
	else:
		print (a)
	a = a + 1
print(‘end.....‘)

a = 1
while a < 100:
	print(a)
	a = a + 2
print(‘所有的奇数....‘)

a = 2
while a < 100:
	print(a)
	a = a + 2
print(‘所有的奇数....‘)

n = 1
s = 0
while n < 101:
	s = s + n
	n = n + 1
print(s)	

count = 0
while count < 3:
	user = input(‘用户名:‘)
	pwd = input(‘密码‘)
	if user == ‘eddy‘ and pwd == ‘123‘:
		print(‘欢迎光临‘)
		break  ###输入正确就会终止循环
	else:
		print(‘用户名密码或错误‘)
		count = count + 1