ipv4的两种验证方法

import re

def check_ip4_1(ip):

    result=[]

    if ip.count(".")==3:

        for i in ip.split("."):

            try:

                if i.strip().startswith("0"):

                    result.append(1)

                elif int(i.strip())>=1 and int(i.strip())<=255:

                    result.append(2)

            except Exception,e:

                print "error",e.message

        if result.count(2)==4:

            return "True"

        else:

            return "False"

 

def check_ip4_2(ip):

    rule1=re.compile(r"[1-2][0-9][0-9]")

    rule2=re.compile(r"[1-9][1-9]")

    rule3=re.compile(r"[1-9]")

    result=[]

    if ip.count(".")==3:

        for i in ip.split("."):

            try:

                if i.strip().startswith("0"):

                    result.append(1)

                elif rule1.match(i) or rule2.match(i) or rule3.match(i):

                    result.append(2)

            except Exception,e:

                print "error",e.message

        if result.count(2)==4:

            return "True"

        else:

            return "False"

 

if __name__=="__message__":

    check_ip4_1(ip4)

    check_ip4_2(ip4)