Banner-grabbing known-ports script

banner-grabbing.py

#!/usr/bin/python3

import socket

def get_banner(ip, port):
    try:
        socket.setdefaulttimeout(2)
        s = socket.socket()
        # connection evaluation
        s.connect((host, port))
        banner = s.recv(1024) # receiving bits
        return banner
    except Exception as e:
        return # say nothing

if __name__ == "__main__":

    ip = input("[+] Enter target IP: ")
    # banner range
    for port in range(1,1024):
        banner = get_banner(ip, port)
        if banner:
            print("[+] %s/%s: %s" % ip, str(port), banner.strip("\n"))