`text.config` crashes because of an overload of events

Question

I asked a question like this here: How to adjust Label in tkinter? But the events load up and eventually python can't handle the events, and it crashes. How to make this not happen?? Maybe because it's in a loop, so they overload? I can't figure out how to make it not crash. Here is my code: from tkinter import * from time import * print("""This is an app that basically you time the amount of time someone takes to fall from a cliff, then we will use an equation to tell you how high the cliff is. This is a recreation of the app Mark Rober created, by The way""") window = Tk() window.title("falling app") window.geometry("700x700") window.configure(bg = "sky blue") """We will use time import for this""" mins = 0 seconds = 0 secs = Label(window, text = seconds, font = ("verdana", 60)) secs.place(relx = 0.48, rely = 0.35, anchor = "nw") def start(): mins = 0 seconds = 0 while seconds != 60: sleep(1.00) seconds+= 1 secs.configure(text = seconds) if seconds == 60: mins = mins+1 seconds = 0 This line: secs.configure(text = seconds) is the culprit. Im sure of it. Thanks in advance!!!!!!!! Edit: This is what it looks like, it blanks out, and becomes unresponsive. JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

The reason the program hangs is because you've created an endless loop which prevents tkinter from ever being able to process events. Tkinter is single threaded, and can only work when it is able to process a steady flow of events. You've prevented that with this infinite loop: while seconds != 60: sleep(1.00) seconds+= 1 secs.configure(text = seconds) A quick fix is to call update in that loop. Your program will still freeze for one second, and then become active for just a few milliseconds before freezing again. That's a very inefficient way to write a tkinter program. The better way would be use use the after method to continually schedule your function to run once every second. There are probably dozens of not hundreds of examples of that technique on this site. In a nutshell it looks something like this: def update_clock() global mins, seconds seconds += 1 if seconds > 60: seconds = 0 mins += 1 secs.configure(text = seconds) window.after(1000, update_clock) You then call this function once in your start method, and it will continue to run every second until the program quits: def start(): global mins, seconds mins = 0 seconds = 0 update_clock()