certabo davinci lc0 network selector

#!/usr/bin/env python3

import tkinter as tk
import os
import sys
from tkinter import *
from tkinter import messagebox

networksdirname = os.getcwd() + "/lc0networks"


def setupWindow():
    lc0netwindow = tk.Tk(className="Select lc0 network")
    lc0netwindow.geometry('300x220')

    ssb = Scrollbar(lc0netwindow, width=20)
    ssb.pack(side=RIGHT, fill=Y, pady=10)

    lbox = tk.Listbox(lc0netwindow,yscrollcommand=ssb.set)
    lbox.pack(padx=5, pady=5, fill=tk.BOTH, expand=True)

    ssb.config(command=lbox.yview)

    for filename in sorted(os.listdir(networksdirname)):
        lbox.insert("end", filename)

    def select_network():
        selected_network = (networksdirname + "/" + lbox.get(lbox.curselection()))
        messagebox.showinfo("Lc0 network", "selected lco network: " + lbox.get(lbox.curselection()))
        os.chdir("/home/pi/davinci/engines")
        if os.access("lc0-network.pb", os.F_OK):
            os.remove("lc0-network.pb")
        os.symlink(selected_network, "lc0-network.pb")

    selectbutton = tk.Button(lc0netwindow, text="Select lc0 network", command=select_network, height=20)
    selectbutton.pack()


    lc0netwindow.mainloop()


if __name__ == "__main__":
    setupWindow()