Python实现的根据IP地址计算子网掩码位数功能示例

#!/usr/bin/env python# coding:utf-8#!/bin/bashnetmask = '255.255.255.0'result = ""print netmaskfor num in netmask.split('.'):  temp = str(bin(int(num)))[2:]  result = result + tempprint len("".join(str(result).split('0')[0:1]))