simple port scanning script

port_scanner.py

import socket,sys,os
host=input("host :")
pfrom=input("Port from :")
pto=input("Port to :")
def TCP_connect(ip, port_number):
    TCPsock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    TCPsock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    TCPsock.settimeout(0.5)
    try:
        TCPsock.connect((ip, port_number))
        print("[scan] -> port open! {} | {}".format(ip,port_number))
    except:
        print("",end="")

for n in range(int(pfrom),int(pto)+1):
    sys.stdout.flush()
    sys.stdout.write("[scan] -> trying! {} | {}\r".format(host,n))
    TCP_connect(host,n)
print(" ")
input("Press any key to exit")