CODEWITHSUNDEEP
pythontkinter
SahilM
SahilM

Reputation: 128

Executing Function in background in tkinter

I am trying to execute a function called alarm in background while function called clock is running. this is my alarm function. As code inside is complex I am only putting an example.

def Alarm():
     while True:
            current_time = dt.datetime.now().time()
            if timetable[0] == current_time:
                  print("Its time")
                  break

clock()
Alarm()
root.mainloop()

The Function isn't executing in background but it executes first and then GUI is started.

Upvotes: 0

Views: 204

Answers (2)

acw1668
acw1668

Reputation: 46669

You can use after() to replace the while loop:

def alarm():
    current_time = dt.datetime.now().time()
    if current_time >= timetable[0]:
        print("It's time")
    else:
        # check again 1 second later
        root.after(1000, alarm)

clock()
alarm()
root.mainloop()

Upvotes: 2

user3482098
user3482098

Reputation:

You need threading:

import threading

# Your Alarm definition

alarm_thread = threading.Thread(target=Alarm)
main_thread = threading.Thread(target=root.mainloop)

alarm_thread.start()
main_thread.start()

The functions will now run concurrently, but be aware that it will be tricky to manage interactions between the two. I don't know how the clock function is defined or how you want it to run, but you can easily modify the code to make that one run concurrently too.

Upvotes: 1

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