本文实例讲述了Python实现的根据IP地址计算子网掩码位数功能。分享给大家供大家参考，具体如下：
#!/usr/bin/env python
# coding:utf-8
#!/bin/bash
netmask = '255.255.255.0'
result =
print netmask
for num in netmask.split('.'):
temp = str(bin(int(num)))[2:]
result = result + temp
print len(.join(str(result).split('0')[0:1]))
运行结果：
PS：这
