Serial.py

import socket
import subprocess
import sys
from datetime import datetime
from tkinter import *
from tkinter.messagebox import *

def help():
    showerror("Help", "Sorry, cannot help you right now.")

def port_scanner():
 if askyesno('Verify', 'Do you want to scan?'):
 
# Clear the screen
  subprocess.call('clear', shell=True)
 
# Ask for input
  remoteServer    = input("Enter a remote host to scan: ")
  remoteServerIP  = socket.gethostbyname(remoteServer)
 
# Print a nice banner with information on which host we are about to scan
  print ("-" * 60)
  print ("Please wait, scanning remote host", remoteServerIP)
  print ("-" * 60)
 
# Check what time the scan started
  t1 = datetime.now()
 
# Using the range function to specify ports (here it will scans all ports between 1 and 1024)
 
# We also put in some error handling for catching errors
 
  try:
   for port in range(1,150):  
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    result = sock.connect_ex((remoteServerIP, port))
    if result == 0:
     print ("Port {}: \t Open".format(port))
     sock.close()
 
  except KeyboardInterrupt:
   print ("You pressed Ctrl+C")
   sys.exit()
 
  except socket.gaierror:
   print ('Hostname could not be resolved. Exiting')
   sys.exit()
 
  except socket.error:
   print ("Couldn't connect to server")
   sys.exit()
 
# Checking the time again
   t2 = datetime.now()
 
# Calculates the difference of time, to see how long it took to run the script
   total =  t2 - t1
 
# Printing the information to screen
   print ('Scanning Completed in: ', total)
 else:
  showinfo('No', 'Scanning data has been cancelled')
  
Button(text='Scan', command=port_scanner).pack(fill=X)
Button(text='Help', command=help).pack(fill=X)
mainloop()