python脚本设置超时机制系统时间的方法

#-*- coding:utf-8 -*-

import socket
import struct
import time
import win32api
import os
import re


def getTime(TimeServerAddresses):
 TIME_1970 = 2208988800L
 client = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
 client.settimeout(3)
 data = 'x1b' + 47 * ''
 #TimeServer_ip=socket.gethostbyname('cn.pool.ntp.org')
 #TimeServer_ip='202.118.1.130'
 Port=123
 for address in TimeServerAddresses:
 success=False
 count=0
 while not success and count<3:
 print address,count
 try:
 client.sendto(data, (address, Port))
 data, address = client.recvfrom(1024)
 success=True
 except socket.timeout:
 print 'Request timed out!'
 count=count+1
 if success==True:a
 break
 data_result = struct.unpack('!12I', data)[10]
 data_result -= TIME_1970
 return data_result

def setSystemTime(now_time):
 tm_year, tm_mon, tm_mday, tm_hour, tm_min, tm_sec, tm_wday, tm_yday, tm_isdst = time.gmtime(now_time)
 win32api.SetSystemTime(tm_year, tm_mon, tm_wday, tm_mday, tm_hour, tm_min, tm_sec, 0)
 print "Set System OK!"

def getServerIP():
 res1=os.popen('nslookup cn.pool.ntp.org')
 result1=res1.read()
 addresses=result1.split('

')[1].split('
')[1][12:].split(',')
 return addresses
 #for address in addresses:
 # res=os.popen('ping -n 2 '+address)
 # result=res.read()
 # received_num=int(re.findall('Received = [0-9]',result)[0].split('=')[1])
 # if received_num > 1:
 # break
 #TimeServer=address


if __name__ == '__main__':
 addresses=getServerIP()
 now_time=getTime(addresses)
 setSystemTime(now_time)
 print "%d-%d-%d %d:%d:%d" % time.localtime(now_time)[:6]