Python Port Scanner (project-1)

import socket
import sys
from datetime import datetime

file = open("Port-Scanner.txt", "w")

try:
    host = input("Please Enter host to Scan: ")
    #host = "localhost"
    host_ip = socket.gethostbyname(host)
    file.write("\nScanning Host: {}\n".format(host_ip))

    t1 = datetime.now()
    print("Start Time: {}".format(t1))
    file.write("Start Time: {}\n".format(t1))
    print("Finding Open Ports: In-Progress......")

    for port in range(1, 1025):
        # AF_INET means IP4 address. AF_INET6 means IP6 address
        # SOCK_STREAM means we are using TCP. SOCK_DGRAM for UDP
        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        sock.settimeout(0.001)
        result = sock.connect_ex((host_ip, port))

        if result == 0:
            print("Port {} is Open".format(port))
            file.write("\nPort {} is Open".format(port))
except socket.gaierror:
    print("HostName you Entered is not correct")
    file.write("\nHostName you Entered is not correct")
    sys.exit()
except socket.error:
    print("Couldn't connect to Server")
    file.write("\nCouldn't connect to Server")
    sys.exit()


t2 = datetime.now()
print("End Time: {}".format(t2))
file.write("\n\nEnd Time: {}".format(t2))

total_time = t2 - t1
print("Total Time: {}".format(total_time))
file.write("\n\nTotal Time: {}".format(total_time))