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Code: Alles auswählen

import tkinter as tk
from functools import partial


def count_call_back(count_label, time_base, led_blinker, counter_value=1):
    count_label["text"] = counter_value
    count_label.after(int(time_base * 1000), count_call_back, count_label, time_base, led_blinker, counter_value + 1)
    switch_label_color(counter_value, led_blinker)


def switch_label_color(counter_value, led_blinker):
    if counter_value % 2 == 1:  # Farbumschlag des Labels
        color = "green"
    else:
        color = "red"
    led_blinker["bg"] = color


def start_action(count_label, led_blinker, eingabe1):  # Zeitbasis wird erzeugt, Eingabefehler abgefangen
    try:
        time_base = float(eingabe1.get())
    except ValueError:
        count_label["text"] = "Nur Zahlen!"
    else:
        count_call_back(count_label, time_base, led_blinker)


def main():
    root = tk.Tk()
    root.title(" Zeit-Zähler und Blinker ")
    root.minsize(width=600, height=500)
    count_label = tk.Label(root, fg="green", bg="white", font=("Arial", 22), width=10, height=2)
    count_label.pack(padx=10, pady=10)
    led_blinker = tk.Label(root, text="LED", font=("Arial", 14), width=10, height=3)
    led_blinker.pack(padx=20, pady=20)
    text1_label = tk.Label(root, text="  Zeitbasis > 0.09 Sek. eingeben", fg="blue")
    text1_label.pack()
    eingabe1 = tk.Entry(root)
    eingabe1.pack()
    start_button = tk.Button(root, text=" Start ", fg="blue", bg="yellow", width=20, command=partial(start_action, count_label, led_blinker, eingabe1))
    start_button.pack(padx=20, pady=85)
    ende_button = tk.Button(root, text="Ende", fg="red", bg="white", width=20, height=1, command=root.destroy)
    ende_button.pack(padx=20, pady=80)
    root.mainloop()


if __name__ == "__main__":
    main()

Code: Alles auswählen

#!/usr/bin/env python3
import tkinter as tk
from functools import partial


def switch_label_color(led_label, counter_value):
    led_label["bg"] = ["red", "green"][counter_value % 2]


def count_callback(count_label, led_blinker, time_base, counter_value=1):
    count_label["text"] = counter_value
    switch_label_color(led_blinker, counter_value)
    count_label.after(
        int(time_base * 1000),
        count_callback,
        count_label,
        led_blinker,
        time_base,
        counter_value + 1,
    )


def start_action(count_label, led_blinker, eingabe):
    try:
        time_base = float(eingabe.get())
    except ValueError:
        count_label["text"] = "Nur Zahlen!"
    else:
        count_callback(count_label, led_blinker, time_base)


def main():
    root = tk.Tk()
    root.title("Zeit-Zähler und Blinker")
    root.minsize(width=600, height=500)
    
    count_label = tk.Label(
        root, fg="green", bg="white", font=("Arial", 22), width=10, height=2
    )
    count_label.pack(padx=10, pady=10)
    
    led_blinker = tk.Label(
        root, text="LED", font=("Arial", 14), width=10, height=3
    )
    led_blinker.pack(padx=20, pady=20)
    
    tk.Label(
        root, text="Zeitbasis > 0.09 Sek. eingeben", fg="blue"
    ).pack()
    
    eingabe = tk.Entry(root)
    eingabe.pack()
    
    tk.Button(
        root,
        text="Start",
        fg="blue",
        bg="yellow",
        width=20,
        command=partial(start_action, count_label, led_blinker, eingabe),
    ).pack(padx=20, pady=85)
    
    tk.Button(
        root,
        text="Ende",
        fg="red",
        bg="white",
        width=20,
        command=root.destroy,
    ).pack(padx=20, pady=80)
    
    root.mainloop()


if __name__ == "__main__":
    main()