# encoding:utf-8

import dns.resolver

# A记录的查询

def query_A(domain):

	result = dns.resolver.query(domain, 'A')

	for i in result.response.answer:

	    for j in i.items:

	    	print j.address

# MX记录的查询

def query_MX(domain):

	result = dns.resolver.query(domain, 'MX')

	for i in result:

		print 'MX preference =', i.preference, 'mail exchanger =', i.exchange

# CNAME记录的查询

def query_CNAME(domain):

	result = dns.resolver.query(domain, 'CNAME')

	for i in result.response.answer:

	    for j in i.items:

	        print j.to_text()

if __name__=='__main__':

	domain = "www.baidu.com"

	query_A(domain)

	# query_MX(domain)