zipping the folder and changing the extension

zipping.py

import os
import shutil
from tkinter import Tk
from tkinter import filedialog
import zipfile


def select_folder():
    root = Tk()
    root.withdraw()
    filepath = filedialog.askdirectory()
    if os.path.exists(filepath):
        return filepath
    else:
        print("Sorry, that path doesn't seem to exist.")


input_folder_path = select_folder()
print("your input folder is:", input_folder_path)
output_folder_path = select_folder()
print("your output folder is:", output_folder_path)

ind = input_folder_path.rfind('/')
base_dir = input_folder_path[:ind+1]
zip_name = input_folder_path[ind+1:]
shutil.make_archive(zip_name, 'zip', input_folder_path)
shutil.move(base_dir + zip_name +'.zip', output_folder_path)
os.rename(output_folder_path + '/' + zip_name +'.zip', output_folder_path + '/' + zip_name + '.ava')