Simple multithreaded portscanner

portscan.py

from threading import Thread
import socket

def scan(ip, port):  
    try:
        con = socket.socket()
        result = con.connect_ex((ip,port))
    
        if result == 0: 
            print '[+] Port %d open' %port
        else: 
            print '[-] Port %d closed' %port
    except:
        print '[-] Port %d error' %port
        
host = 'www.ping.nl'
ports = [21,22,25,53,80,8080]

for port in ports:
    t = Thread(target=scan, args=(host, port))
    t.start()