Port Scanner Basic

port_scanner_basic.py

import socket
import sys
def checkPortsSocket(ip,portlist):
    try:
        for port in portlist:
            sock= socket.socket(socket.AF_INET,socket.SOCK_STREAM)
            sock.settimeout(5)
            result = sock.connect_ex((ip,port))
            if result == 0:
                print ("Port {}: \t Open".format(port))
            else:
                print ("Port {}: \t Closed".format(port))
            sock.close()
    except socket.error as error:
        print (str(error))
        print ("Connection error")
        sys.exit()
checkPortsSocket('localhost',[21,22,80,8080,443])