CodeBlockHub Building a simple To-Do List Application with Python and Tkinter -

Creating a simple To-Do List application can be a great project for beginners to dive into Python programming and GUI (Graphical User Interface) development. This project uses Python’s Tkinter library to create a simple and interactive UI for To-Do application.

Requirements

Python installed on your computer
Basic understanding of Python programming

Steps to Build the Project

Step 1: Import Tkinter

Firstly, you need to import the Tkinter library.

Python

import tkinter as tk
from tkinter import ttk

Step 2: Initialize the Tkinter Window

Initialize the Tkinter window and set its title and size.

Python

root = tk.Tk()
root.title("To-Do List App")
root.geometry("400x400")

Step 3: Create the To-Do List UI Elements

Create labels, buttons, and the listbox for the To-Do list.

Python

label = ttk.Label(root, text="Enter your task:")
label.pack(pady=10)

entry = ttk.Entry(root, width=50)
entry.pack(pady=10)

button_frame = ttk.Frame(root)
button_frame.pack(pady=20)

add_button = ttk.Button(button_frame, text="Add", command=lambda: add_task())
add_button.grid(row=0, column=0, padx=10)

delete_button = ttk.Button(button_frame, text="Delete", command=lambda: delete_task())
delete_button.grid(row=0, column=1, padx=10)

task_listbox = tk.Listbox(root, width=50, height=10, selectmode=tk.SINGLE)
task_listbox.pack()

Step 4: Add Functionality to Add and Delete Tasks

Create functions to add and delete tasks in the listbox.

Python

def add_task():
    task = entry.get()
    if task != "":
        task_listbox.insert(tk.END, task)
    entry.delete(0, tk.END)

def delete_task():
    try:
        index = task_listbox.curselection()[0]
        task_listbox.delete(index)
    except:
        pass

Step 5: Run the Tkinter Event Loop

Finally, run the Tkinter event loop to keep the application running.

Python

root.mainloop()

Complete Code

Here’s the complete code for your To-Do List application.

Python

import tkinter as tk
from tkinter import ttk

def add_task():
    task = entry.get()
    if task != "":
        task_listbox.insert(tk.END, task)
    entry.delete(0, tk.END)

def delete_task():
    try:
        index = task_listbox.curselection()[0]
        task_listbox.delete(index)
    except:
        pass

root = tk.Tk()
root.title("To-Do List App")
root.geometry("400x400")

label = ttk.Label(root, text="Enter your task:")
label.pack(pady=10)

entry = ttk.Entry(root, width=50)
entry.pack(pady=10)

button_frame = ttk.Frame(root)
button_frame.pack(pady=20)

add_button = ttk.Button(button_frame, text="Add", command=lambda: add_task())
add_button.grid(row=0, column=0, padx=10)

delete_button = ttk.Button(button_frame, text="Delete", command=lambda: delete_task())
delete_button.grid(row=0, column=1, padx=10)

task_listbox = tk.Listbox(root, width=50, height=10, selectmode=tk.SINGLE)
task_listbox.pack()

root.mainloop()

Save this code in a Python file and run it. A window should appear with options to add and delete tasks from your To-Do List.

And there you have it! A simple but functional To-Do List application built with Python and Tkinter. Feel free to add more features, like saving tasks to a file or setting deadlines, as you become more comfortable with Python and Tkinter.