这段代码，还能怎么优化效率，求建议

[amxku]

def checkIpName(arg):
cmd = 'nslookup %s' % arg.strip()
handle = Popen(cmd, stdout = PIPE, stderr = PIPE, shell = True).stdout
re_handle = handle.read()
handle.close()

# name 关键词
botkey = ['baidu','google','yahoo','msn']

if re.search('Name',re_handle):
for bk in botkey:
checkkey = re.search(bk,re_handle)
if checkkey:
print "%s-%s\n" % (arg.strip(),bk)
break

[amxku]

https://gist.github.com/amxku/5220044

[amxku]

https://gist.github.com/5220044.git

[phuslu]

return any(x in socket.gethostbyaddr(arg.strip())[0] for x in ['baidu','google','yahoo','msn'])

[sykp241095]

不用popen怎么都快。