Welcome folks today in this post we will be building a simple digital clock desktop app in tkinter using python. All the full source code of the application is given below.

Get Started

In order to get started you need to create an app.py file and copy paste the following code

app.py

import tkinter as tk
from time import strftime


def light_theme():
    frame = tk.Frame(root, bg="white")
    frame.place(relx=0.1, rely=0.1, relwidth=0.8, relheight=0.8)
    lbl_1 = tk.Label(frame, font=('calibri', 40, 'bold'),
                     background='White', foreground='black')
    lbl_1.pack(anchor="s")

    def time():
        string = strftime('%I:%M:%S %p')
        lbl_1.config(text=string)
        lbl_1.after(1000, time)
    time()


def dark_theme():
    frame = tk.Frame(root, bg="#22478a")
    frame.place(relx=0.1, rely=0.1, relwidth=0.8, relheight=0.8)
    lbl_2 = tk.Label(frame, font=('calibri', 40, 'bold'),
                     background='#22478a', foreground='black')
    lbl_2.pack(anchor="s")

    def time():
        string = strftime('%I:%M:%S %p')
        lbl_2.config(text=string)
        lbl_2.after(1000, time)
    time()


root = tk.Tk()
root.title("Digital-Clock")
canvas = tk.Canvas(root, height=140, width=400)
canvas.pack()

frame = tk.Frame(root, bg='#22478a')
frame.place(relx=0.1, rely=0.1, relwidth=0.8, relheight=0.8)
lbl = tk.Label(frame, font=('calibri', 40, 'bold'),
                     background='#f00', foreground='yellow')
lbl.pack(anchor="s")

def time():
    string = strftime('%I:%M:%S %p')
    lbl.config(text=string)
    lbl.after(1000, time)
time()

menubar = tk.Menu(root)
theme_menu = tk.Menu(menubar, tearoff=0)
theme_menu.add_command(label="Light", command=light_theme)
theme_menu.add_command(label="Dark", command=dark_theme)
menubar.add_cascade(label="Theme", menu=theme_menu)
root.config(menu=menubar)
root.mainloop()

Now if you execute the python script by typing the below command

python app.py