[Tkinter] bad window path name

[menator01]

This works for me

#! /usr/bin/env python3
import tkinter as tk

root=tk.Tk()
root.title('Program Selection')
canvas1=tk.Canvas(root,width =300, height=150)
canvas1.pack()


def prog():
    import play
    return

def prog2():
    import game
    return

labelTop=tk.Label(canvas1,text='Choose a program')
canvas1.create_window(150,40,window=labelTop)

button1=tk.Button(text='program1',command = prog)
canvas1.create_window(150,75,window=button1)

button2=tk.Button(text='program2',command=prog2)
canvas1.create_window(150,110,window=button2)

root.mainloop()