python的while如何使用

while 判断条件：

    执行语句……

# continue 和 break 用法

 i = 1while i < 10:  

    i += 1

    if i%2 > 0:     # 非双数时跳过输出

        continue

    print i         # 输出双数2、4、6、8、10

 i = 1while 1:            # 循环条件为1必定成立

    print i         # 输出1~10

    i += 1

    if i > 10:     # 当i大于10时跳出循环

        break

#!/usr/bin/python

count = 0

while count < 5:

   print count, " is  less than 5"

   count = count + 1

else:

   print count, " is not less than 5"

0 is less than 5

1 is less than 5

2 is less than 5

3 is less than 5

4 is less than 5

5 is not less than 5