To-Do List App GUI

import tkinter as tk
from tkinter import messagebox

# Initialize the window
window = tk.Tk()
window.title("To-Do List")

# Create a list to store tasks
tasks = []

# Function to add a task
def add_task():
    task = entry.get()
    if task:
        tasks.append(task)
        update_task_list()
        entry.delete(0, tk.END)
    else:
        messagebox.showwarning("Empty Task", "Please enter a task.")

# Function to remove a task
def remove_task():
    selected_task = task_listbox.curselection()
    if selected_task:
        index = selected_task[0]
        tasks.pop(index)
        update_task_list()

# Function to update the task list
def update_task_list():
    task_listbox.delete(0, tk.END)
    for task in tasks:
        task_listbox.insert(tk.END, task)

# Entry widget to input tasks
entry = tk.Entry(window, width=30)
entry.grid(row=0, column=0, padx=10, pady=10)

# Button to add a task
add_button = tk.Button(window, text="Add Task", command=add_task)
add_button.grid(row=0, column=1, padx=5)

# Task listbox
task_listbox = tk.Listbox(window, width=40)
task_listbox.grid(row=1, column=0, columnspan=2, padx=10, pady=10)

# Button to remove a task
remove_button = tk.Button(window, text="Remove Task", command=remove_task)
remove_button.grid(row=2, column=0, columnspan=2, padx=10, pady=5)

window.mainloop()