from socket import *
from sys import argv,exit
open_port=[]
def check_port(sip,sport):
    s = socket(AF_INET, SOCK_STREAM)
    s.settimeout(0.001)
    try:
        s.connect((sip,sport))
        open_port.append(sport)
    except KeyboardInterrupt:
        print("Scanning Was Terminated.")
        exit()
    except:
	pass
    s.close()

def show_oports():
    print "open tcp ports is:"
    j = 1
    if len(open_port) > 0:
        for i in open_port:
            print "%d.%s is open." % (j,i)
            j += 1
    else:
        print "is nothing."

port = argv[2]
ip = str(argv[1])
ports = port.split("-")
if len(ports) == 2:
    for i in range(int(ports[0]),int(ports[1])):
        check_port(ip,i)
elif len(ports) == 1:
    check_port(ip,int(ports[0]))

show_oports()

#single port scan
python <source file>.py 192.168.1.1 443

#range port scan
python <source file>.py 192.168.1.1 1-65535