判断端口是否打开

#!/usr/bin/env python

# name IsOpen.py

import os

import socket

def IsOpen(ip,port):

    s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)

    try:

        s.connect((ip,int(port)))

        s.shutdown(2)

        print '%d is open' % port

        return True

    except:

        print '%d is down' % port

        return False

if __name__ == '__main__':

    IsOpen('1.1.1.1',800)