Python Learning-use ip138 to query IP address attribution

#!/usr/bin/python#coding:utf-8import urllibimport reimport sysdef isip (s):     return len ([I for i in s.split ('. ')  if  (0<= int (i) <= 255)]) == 4def url (IP): Uip=urllib.urlopen ('/HTTP/ wap.ip138.com/ip.asp?ip=%s '%ip) fip=uip.read () Rip=re.compile (r) <br/><b> query result: (. *) </b><br/ > ") result=rip.findall (FIP) print "%s\t %s " % (Ip,result[0]) def do (domain):         url=urllib.urlopen (' http://wap.ip138.com/ip.asp?ip=%s '%domain)          f=url.read ()         r=re.compile ( R ' &gt;  (. *) <br/><b> Query results: (. *) </b><br/> ')          result=r.findall (f) #print  type (Result) for i in result:         print  "%s\t %s\t %s\t"  % (Domain,i[0],i[1]) if __name__ ==  "__main__": If len (SYS.ARGV)  < 2:print  "Please enter an IP address or domain name   (example: 192.168.1.1 / www.baidu.com)" Sys.exit () input=sys.argv[1]if not  Re.findall (' (\d{1,3}\.) {3}\d{1,3} ', INPUT):         if re.findall (R ' (\w+\)? (\w+) (\.\d+) {()} ', INPUT)  :                 domain=inputdo (DOMAIN)         else:                 print  "The input IP address and domain name format is wrong!" "Else:        if isip (INPUT)   :                 ipaddress=inputurl (IPADDRESS)          else:                 print  "ip  address is not legal, please re-enter! "

Python Learning-use ip138 to query IP address attribution