python如下脚本运行时提示：SyntaxError: invalid syntax

#!/usr/bin/python

#coding:utf-8

import urllib

import re

import sys



def ISIP(s):

    return len([i for i in s.split('.') if (0<= int(i)<= 255)])== 4



def URL(ip):

    uip=urllib.urlopen('http://wap.ip138.com/ip.asp?ip=%s'%ip)

    fip=uip.read()

    rip=re.compile(r"<br/><b>查询结果：(.*)</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'> (.*)<br/><b>查询结果：(.*)</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("请输入IP地址或者域名 (例如: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+){1,2}',INPUT) :

            DOMAIN=INPUT

            DO(DOMAIN)

        else:

            print("输入的IP地址和域名格式不对！")

    else:

        if ISIP(INPUT):

            IPADDRESS=INPUT

            URL(IPADDRESS)

        else:

            print("IP 地址不合法，请重新输入！")