无法实时更新此 GUI 中的时间？

Question

import tkinter as tk
from tkinter import ttk
from time import strftime
try:
    from ctypes import windll
    windll.shcore.SetDpiAwareness(1)
except Exception as e:
    pass


class App(tk.Tk):
    def __init__(self):
        super().__init__()
        self.title('Digital Clock')
        self.geometry('290x70')
        self.resizable(False, False)

        def tick():
            set_time = strftime('%H:%M:%S:%p')
            clock_label.config(text=set_time)

        clock_label = ttk.Label(self, font=('calibri', 40, 'bold'),
                                background='yellow', foreground='black',
                                )
        clock_label.grid(row=0, column=0)
        clock_label.after(100, tick)


if __name__ == '__main__':
    digiclock = App()
    digiclock.mainloop()`
```

The time after being set dont update itself after using the after method on label. Why its not doing so and how to correct it?

Here you can see nothing appears into the window while after method used within the the tick() method

Answer 1

import tkinter as tk
from tkinter import ttk
from time import strftime
try:
    from ctypes import windll
    windll.shcore.SetDpiAwareness(1)
except Exception as e:
    pass


class App(tk.Tk):
    def __init__(self):
        super().__init__()
        self.title('Digital Clock')
        self.geometry('290x70')
        self.resizable(False, False)

        def tick():
            set_time = strftime('%H:%M:%S:%p')
            clock_label.config(text=set_time)

        clock_label = ttk.Label(self, font=('calibri', 40, 'bold'),
                                background='yellow', foreground='black',
                                )
        clock_label.grid(row=0, column=0)
        clock_label.after(100, tick)


if __name__ == '__main__':
    digiclock = App()
    digiclock.mainloop()`
```

The time after being set dont update itself after using the after method on label. Why its not doing so and how to correct it?

Here you can see nothing appears into the window while after method used within the the tick() method

Answer 2

import tkinter as tk
from tkinter import ttk
from time import strftime
try:
    from ctypes import windll
    windll.shcore.SetDpiAwareness(1)
except Exception as e:
    pass


class App(tk.Tk):
    def __init__(self):
        super().__init__()
        self.title('Digital Clock')
        self.geometry('290x70')
        self.resizable(False, False)

        def tick():
            set_time = strftime('%H:%M:%S:%p')
            clock_label.config(text=set_time)

        clock_label = ttk.Label(self, font=('calibri', 40, 'bold'),
                                background='yellow', foreground='black',
                                )
        clock_label.grid(row=0, column=0)
        clock_label.after(100, tick)


if __name__ == '__main__':
    digiclock = App()
    digiclock.mainloop()`
```

The time after being set dont update itself after using the after method on label. Why its not doing so and how to correct it?

Here you can see nothing appears into the window while after method used within the the tick() method