Trying to fix tkinter GUI freeze-ups (using threads)

by

You’ll need two functions: the first encapsulates your program’s long-running work, and the second creates a thread that handles the first function. If you need the thread to stop immediately if the user closes the program while the thread is still running (not recommended), use the daemon flag or look into Event objects. If you don’t want the user to be able to call the function again before it’s finished, disable the button when it starts and then set the button back to normal at the end.

import threading
import tkinter as tk
import time

class App:
    def __init__(self, parent):
        self.button = tk.Button(parent, text="init", command=self.begin)
        self.button.pack()
    def func(self):
        '''long-running work'''
        self.button.config(text="func")
        time.sleep(1)
        self.button.config(text="continue")
        time.sleep(1)
        self.button.config(text="done")
        self.button.config(state=tk.NORMAL)
    def begin(self):
        '''start a thread and connect it to func'''
        self.button.config(state=tk.DISABLED)
        threading.Thread(target=self.func, daemon=True).start()

if __name__ == '__main__':
    root = tk.Tk()
    app = App(root)
    root.mainloop()

More Related Contents:

  1. Freezing/Hanging tkinter GUI in waiting for the thread to complete
  2. Threads and tkinter
  3. How to pass arguments to a Button command in Tkinter?
  4. Tkinter: How to use threads to preventing main event loop from “freezing”
  5. Are lists thread-safe?
  6. PermissionError: [Errno 13] Permission denied
  7. Why is Tkinter Entry’s get function returning nothing?
  8. Play an Animated GIF in python with tkinter
  9. PyQt4 Wait in thread for user input from GUI
  10. Which tkinter modules were renamed in Python 3?
  11. What’s the difference between “update” and “update_idletasks”?
  12. Using win32com with multithreading
  13. Display realtime output of a subprocess in a tkinter widget
  14. tkinter.TclError: image “pyimage3” doesn’t exist
  15. Program freezing during the execution of a function in Tkinter
  16. Tkinter resize background image to window size
  17. Kill a running subprocess call
  18. How do I include files with pyinstaller?
  19. How to Install and Use TkDnD with Python Tkinter on OSX?
  20. cx_Freeze converted GUI-app (tkinter) crashes after pressing plot button
  21. Difference between “grid” and “pack” geometry managers
  22. How to create a modal dialog in tkinter?
  23. python – While Loop causes entire program to crash in Tkinter
  24. Tkinter error: Couldn’t recognize data in image file
  25. Threaded Tkinter script crashes when creating the second Toplevel widget
  26. “subprocess.Popen” – checking for success and errors
  27. How to start threads at the same time in Python [duplicate]
  28. Python Tkinter Label redrawing every 10 seconds
  29. Why do Tkinter’s Radio Buttons all Start Selected When Using StringVar but not IntVar?
  30. How do I resize buttons in pixels? (Tkinter)

Leave a Comment