gistfile1.txt

import dns.resolver
import timeit
import subprocess
import shlex


def cmd(cmd, input_data=None):
    cmd = shlex.split(str(cmd))

    popen = subprocess.Popen(cmd, stderr=subprocess.PIPE,
                             stdout=subprocess.PIPE, stdin=subprocess.PIPE,
                             shell=False)
    stdout, stderr = popen.communicate(input_data)

    return popen.returncode, stdout, stderr


def dnsp_mx():
    resolver = dns.resolver.Resolver()
    resolver.nameservers = ['8.8.4.4',]
    answers = resolver.query('dnspython.org', 'MX')

def dig_mx():
    _, out, _ = cmd('dig +short mx @8.8.4.4 dnspython.org')

if __name__ == '__main__':
    print "dnspython %s" % timeit.timeit(dnsp_mx, number=1000)
    print "dig %s" %timeit.timeit(dig_mx, number=1000)