本文实例讲述了python实现自动更换ip的方法。分享给大家供大家参考。具体实现方法如下：

#!/usr/bin/env python

#-*- encoding:gb2312 -*-

# Filename: IP.py

import sitecustomize

import _winreg

import ConfigParser

from ctypes import *

print '正在进行网络适配器检测，请稍候…'

print

netCfgInstanceID = None

hkey = _winreg.OpenKey(_winreg.HKEY_LOCAL_MACHINE,

r'SystemCurrentControlSetControlClass{4d36e972-e325-11ce-bfc1-08002be10318}')

keyInfo = _winreg.QueryInfoKey(hkey)

# 寻找网卡对应的适配器名称 netCfgInstanceID

for index in range(keyInfo[0]):

hSubKeyName = _winreg.EnumKey(hkey, index)

hSubKey = _winreg.OpenKey(hkey, hSubKeyName)

try:

hNdiInfKey = _winreg.OpenKey(hSubKey, r'NdiInterfaces')

lowerRange = _winreg.QueryValueEx(hNdiInfKey, 'LowerRange')

# 检查是否是以太网

if lowerRange[0] == 'ethernet':

driverDesc = _winreg.QueryValueEx(hSubKey, 'DriverDesc')[0]print '检测到网络适配器名：', driverDesc

netCfgInstanceID = _winreg.QueryValueEx(hSubKey, 'NetCfgInstanceID')[0]print '检测到网络适配器ID：', netCfgInstanceID

if netCfgInstanceID == None:

print '没有找到网络适配器，程序退出'

exit()

break

_winreg.CloseKey(hNdiInfKey)

except WindowsError:

print r'Message: No NdiInterfaces Key'

# 循环结束，目前只提供修改一个网卡IP的功能

_winreg.CloseKey(hSubKey)

_winreg.CloseKey(hkey)

# 通过修改注册表设置IP

strKeyName = 'SystemCurrentControlSetServicesTcpipParametersInterfaces' + netCfgInstanceID

print '网络适配器的注册表地址是：n', strKeyName

hkey = _winreg.OpenKey(_winreg.HKEY_LOCAL_MACHINE,

strKeyName,

0,

_winreg.KEY_WRITE)

config = ConfigParser.ConfigParser()

print

print '正在打开IP.ini配置文件…'

config.readfp(open('IP.ini'))

IPAddress = config.get("school","IPAddress")

SubnetMask = config.get("school","SubnetMask")

GateWay = config.get("school","GateWay")

DNSServer1 = config.get("school","DNSServer1")

DNSServer2 = config.get("school","DNSServer2")

DNSServer = [DNSServer1,DNSServer2]print '配置文件内设定的信息如下，请核对：'

print

print 'IP地址：', IPAddress

print '子关掩码：', SubnetMask

print '默认网关：', GateWay

print '主DNS服务器：', DNSServer1

print '次DNS服务器：', DNSServer2

print

res = raw_input('现在，请您决定：输入1，则将配置文件写入系统；输入2，则将现有的系统设定还原为全部自动获取；否则程序退出：')

if str(res) == '1':

try:

_winreg.SetValueEx(hkey, 'EnableDHCP', None, _winreg.REG_DWORD, 0x00000000)

_winreg.SetValueEx(hkey, 'IPAddress', None, _winreg.REG_MULTI_SZ, [IPAddress])

_winreg.SetValueEx(hkey, 'SubnetMask', None, _winreg.REG_MULTI_SZ, [SubnetMask])