Closing a Tkinter popup automatically without closing the main window
<p>I am making a GUI for a project and my supervisor requested that I include a progress bar as each iteration of the program can take up to 7 minutes.</p>

<p>I want the progress bar to pop up in a separate window, and close after the process is finished but, with my current understanding, either I have to close the popup manually or the whole GUI closes at once. </p>

<p>This is a simplified version of the code I'm using</p>

<pre><code>import Tkinter as tk
from ttk import Progressbar
from os import listdir
import threading
import time
root = tk.Tk()
root.title("TCC Image Processing")



def create_tcc(input_bar, input_progress_dialog):


    input_bar['maximum'] = 5
    input_bar['value'] = 0
    for x in range(5):
        time.sleep(1)
        input_bar['value'] += 1
    # this line is where the touble seems to be
    input_progress_dialog.destroy()


def run_tcc():
    progress_dialog = tk.Toplevel()
    progress_dialog.title("TCC Processing")

    bar = Progressbar(progress_dialog, orient="horizontal", length=500, value=0, mode="determinate")
    bar.grid(row=4, columnspan=2)
    t = threading.Thread(target=create_tcc, args=(bar, progress_dialog))
    t.start()
tcc_run_button = tk.Button(root, text="RUN", command=lambda:run_tcc())
tcc_run_button.pack()

root.mainloop()
</code></pre>

<p>If possible I would like to avoid downloading extra modules that don't come with straight python.</p>