Python To-Do List Application (GUI + File Persistence + Theme Switcher)

A lightweight and functional Python To-Do List application that allows users to add, edit, complete, and delete tasks through a clean GUI.
All tasks are saved persistently in a text file, and the application includes a light/dark theme system for user customization.

---

Overview

This project demonstrates a modular Python application featuring:

• ✔ Task creation
• ✔ Task editing
• ✔ Marking tasks as completed
• ✔ Task deletion
• ✔ Persistent storage in a .txt file
• ✔ Light/Dark theme toggle
• ✔ Clean GUI interface
• ✔ Modular code structure (core, theme manager, GUI)
• ✔ Optional CLI logic inside the Jupyter notebook

The app is useful as a small productivity tool and serves as a demonstration of GUI programming + file handling in Python.

---

📁 Project Structure

Python_To-Do-List_CLIGUI/ │

├── deneme_gui.py # Main GUI application (buttons, widgets, layout)

├── todo_core.py # Task management logic (add/edit/delete/complete)

├── theme_manager.py # Light/Dark theme engine

│

├── gorevler.txt # Persistent storage for tasks

│ (Automatically read/written when the app runs)

│

├── to-Do-List.ipynb # Development notebook / prototyping

│

├── pycache/ # Auto-generated Python cache └── venv/ # Virtual environment (not required for GitHub)

---

GUI Features

• Add new task via input field
• Edit selected task
• Mark tasks as completed
• Delete tasks
• Toggle between Light Theme and Dark Theme
• Automatic reading/writing to gorevler.txt
• Real-time update of task list
• Scrollable task area (depending on implementation)

---

Persistent Storage: gorevler.txt

Every task you enter is stored inside: gorevler.txt