作用：可以用来测试程序的循环是否有问题等、
[root@test01 /home]# cat while_else.py
#!/usr/bin/python
#Author:LinYaoHong
count = 0
while count <=5:
count +=1
print("loop",count)
else:
print("while True")
print(".....End............")
[root@test01 /home]# python while_else.py
loop 1
loop 2
loop 3
loop 4
loop 5
loop 6
while True #while正常循环完毕、执行了else后面的语句
.....End............
尝试中止循环的实验
[root@test01 /home]# cat while_else02.py
#!/usr/bin/python
#Author:LinYaoHong
count = 0
while count <=5:
count +=1
print("loop",count)
if count == 3:
break
else:
print("while True")
print(".....End............")
[root@test01 /home]# python while_else02.py
loop 1
loop 2
loop 3 #while被break退出，没有执行else后面的语句
.....End............
