python实现定时同步本机与北京时间的方法

# -*- coding: utf-8 -*-
import time,httplib
import threading
def getBeijinTime():
 try:
 conn = httplib.HTTPConnection("www.beijing-time.org")
 conn.request("GET", "/time.asp")
 response = conn.getresponse()
 print response.status, response.reason
 if response.status == 200:
 result = response.read()
 data = result.split("
")
 year = data[1][len("nyear")+1 : len(data[1])-1]
 month = data[2][len("nmonth")+1 : len(data[2])-1]
 day = data[3][len("nday")+1 : len(data[3])-1]
 #wday = data[4][len("nwday")+1 : len(data[4])-1]
 hrs = data[5][len("nhrs")+1 : len(data[5])-1]
 minute = data[6][len("nmin")+1 : len(data[6])-1]
 sec = data[7][len("nsec")+1 : len(data[7])-1]
 beijinTimeStr = "%s/%s/%s %s:%s:%s" % (year, month, day, hrs, minute, sec)
 beijinTime = time.strptime(beijinTimeStr, "%Y/%m/%d %X")
 return beijinTime
 except:
 return None
def syncLocalTime():
 """
 同步本地时间
 """
 beijinTime = getBeijinTime()
 if beijinTime is None:
 timer = threading.Timer(30.0, syncLocalTime)
 timer.start()
 else:
 tm_year, tm_mon, tm_mday, tm_hour, tm_min, tm_sec = beijinTime[:6]
 import os
 os.system("date %d-%d-%d" % (tm_year, tm_mon, tm_mday))#设置日期
 os.system("time %d:%d:%d.0" % (tm_hour, tm_min, tm_sec))#设置时间
if __name__=='__main__':
 while True:
 syncLocalTime()
 time.sleep(30)