port-scanner.py

import socket
import threading
from queue import Queue

target= "127.0.0.1"      #Write the ip address of target you want to scan
queue=Queue()
open_ports=[]

def portscan(port):
    try:
        sock =socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        sock.connect((target, port))
        return True
    except:
        return False

def fill_queue(port_list):
    for port in port_list:
        queue.put(port)

def worker():
    while not queue.empty():
        port=queue.get()
        if portscan(port):
            print("Port {} is open".format(port))
            open_ports.append(port)

port_list =range(1,1024)
fill_queue(port_list)

thread_list=[]
for t in range(10):                                      
    thread = threading.Thread(target=worker)
    thread_list.append(thread)

for thread in thread_list:
    thread.start()

for thread in thread_list:
    thread.join()

print("Open ports are:", open_ports)