python不间断获取指定ulr的ip

一 代码

from time import sleep
from socket import gethostbyname
from datetime import datetime
def get_ipAddresses(url):
ipAddresses=[0]
whileTrue:
sleep(0.5)
ip = gethostbyname(url)
if ip != ipAddresses[-1]:
ipAddresses.append(ip)
print(str(datetime.now())[:19]+&＃39;===>&＃39;+ip)
get_ipAddresses(r&＃39;www.microsoft.com&＃39;)