Count Button Press

[deanhystad]

The tricky part is periodically calling a function, but I believe there are timers in raspberry pi that you can configure to call a function (Timer.PERIODIC). The timer can call the _update_display function directly. The _periodic_update() function in my example was required because tkinter doesn't have anything as nice as Timer.

You should be able to hook the button directly to the _button_clicked function (button.when_pressed = _button_clicked).

I wrote my code as a class, but it can be functions.

import tkinter as tk
from datetime import datetime, timedelta


def update_display():
    start = datetime.now() - timedelta(minutes=1)
    while clicks and start > clicks[0]:
        clicks.pop(0)
    tics_per_hour.set(len(clicks))


def button_clicked():
    clicks.append(datetime.now())
    update_display()


def periodic_update():
    update_display()
    root.after(1000, periodic_update)


root = tk.Tk()
button = tk.Button(root, text="Push Me", command=button_clicked)
label = tk.Label(root, text="Button clicks per minute:", anchor="e")
tics_per_hour = tk.IntVar(root, 0)
display = tk.Label(root, textvariable=tics_per_hour, width=6, anchor="w")
label.grid(row=0, column=0, padx=(10, 5), pady=10, sticky="e")
display.grid(row=0, column=1, padx=(0, 10), pady=10, sticky="w")
button.grid(row=1, column=0, columnspan=2, padx=10, pady=(0, 10), sticky="news")
clicks = []
periodic_update()
root.mainloop()

Nowhere in your code can you have this:

while True:

Loops should be rare in raspberry pi code.