Don't understand error message

[Milfredo]

I had quite a bit of code written and it was working fine. Then I did something that threw the following error. But first I went back to the beginning as the code will show and I am getting the same message.

from tkinter import *
from PIL import ImageTk, Image
from  tkinter import messagebox
import glob
import os
import shutil
import csv
import numpy as np


root = Tk()

root.title("Handifast Version 13.0")
root.geometry("1100x700")
root.iconbitmap("c:/guis/racehorse.ico")









root.mainloop()

Error Meeage:

C:\Users\Milford\AppData\Local\Programs\Python\Python38-32\python.exe: can't open file 'hello.py/': [Errno 22] Invalid argument

Thank you

[Larz60+]

remove '/' at end
use: python hello.py

[Milfredo]

it was really late and my eyesight is suspect at my age. I didn't even see the "/" character. Thanks so much.