python - Tkinter button stuck / frozen upon pressing until all the commands are executed -

just started tkinter , posting snippet of code. label , button label , button class objects respectively.

when button pressed first time on_button_click_organisation called changes button configuration , when click on_button_click_compute called, expected perform time taking action via main method.

but gui gets stuck until main() ends. how stop , make button active once excecution returns after computing main() , inactive till then?

def on_button_click_organisation(self):     self.organisation_file = askopenfilename(filetypes=[("*.csv", "csv")])     print("organisation file : " + self.organisation_file)     self.label.config(text = "start code")     self.button.config(text = "start", command = self.on_button_click_compute)   def on_button_click_compute(self):     self.label.config(text = "wait..\nresult being computed\n(might take 15 minutes)")      self.button.config(state = disabled)      #time taking task     main(self.filename, self.organisation_file, self.result_folder)     sleep(5) #to mimic time taking main() if main() returns in less time      self.button.config(state = normal)     self.label.config(text = "done..\ncheck result folder")      self.button.configure(text = "finish", command=root.quit())