socket模块的学习一

打印dns查询

#!/usr/bin/python

import socket

def gethost_ex(host_ex):

        hostname_ex,alias_ex,address_ex = socket.gethostbyname_ex(host_ex)

        return hostname_ex,alias_ex,address_ex

def array_print(*arr):

        for item in arr:

                print '  ',item

        print

for host in ["","",""]:

        print host

        try :

                hostname,alias,address = gethost_ex(host)

        except socket.error as e:

                print 'error',e

                continue

        print ' HostName:',hostname

        print ' Alias:'

        array_print(*alias)

        print ' Address:'

        array_print(*address)