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todoapp/README.md

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+# To-Do List Notebook
+
+A simple to-do list application built with Python's Tkinter library, designed to look like a notebook page. Users can add tasks, mark them as complete, and delete completed tasks with ease.
+
+## Features
+
+- **Notebook-Styled UI**: The app has a light beige, lined background to resemble a notebook page.
+- **Add Tasks**: Add tasks using the `+` button.
+- **Delete Tasks**: Delete only tasks that are ticked as complete using the "Delete" button.
+- **Task Management**: Checkboxes allow users to mark tasks as completed, changing their appearance to indicate completion.
+
+## Screenshot
+
+![To-Do List Notebook Screenshot](assets/screenshot.png)
+
+
+## Requirements
+
+- **Python 3.x**
+- **Tkinter** (Python's standard GUI library, usually included with Python)
+
+## How to Run
+
+1. Clone or download this repository.
+2. Open a terminal in the project folder.
+3. Run the following command:
+
+    ```bash
+    python todo_notebook.py
+    ```
+
+4. The To-Do List Notebook app window should open.
+
+## Code Overview
+
+- **`add_task()`**: Adds a new task with a checkbox to mark it as completed.
+- **`toggle_complete()`**: Updates the checkbox color when a task is marked complete or incomplete.
+- **`delete_completed_tasks()`**: Deletes tasks that have been checked as completed.
+- **`update_task_list()`**: Refreshes the display of tasks.
+
+## Customization
+
+You can easily modify the app to fit your preferences by adjusting:
+- **Colors**: Modify the `button_color`, `button_hover_color`, or `notebook_color` variables to customize the theme.
+- **Fonts**: Change the `header_font` and `task_font` for different text styles.
+
+## Known Issues
+
+- **Limited Responsiveness**: The UI is best viewed at the specified window size (450x500) but may not scale perfectly on resizing.
+
+## License
+
+This project is open-source and available under the [MIT License](LICENSE).
+
+## Acknowledgements
+
+- **Tkinter**: For providing the GUI framework.
+- **Python Community**: For documentation and resources to build this app.
+

todoapp/app.py

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+import tkinter as tk
+from tkinter import messagebox, font
+
+# Initialize the main app window
+app = tk.Tk()
+app.title("To-Do List Notebook")
+app.geometry("450x500")
+app.config(bg="#f0f4f8")
+
+# Set custom fonts and colors
+header_font = font.Font(family="Helvetica", size=18, weight="bold")
+task_font = font.Font(family="Arial", size=12)
+button_color = "#4CAF50"
+button_hover_color = "#45a049"
+task_complete_color = "#2e8b57"
+notebook_color = "#FFF8DC"  # Light beige to mimic a notebook page
+
+# Task list to hold tasks
+todo_list = []
+
+# Functions to manage tasks
+def add_task():
+    """Add a new task with a checkbox to mark as completed."""
+    task_text = entry_task.get()
+    if task_text:
+        task_var = tk.BooleanVar()
+        task_frame = tk.Frame(task_list_frame, bg=notebook_color, padx=5, pady=3)
+
+        checkbox = tk.Checkbutton(
+            task_frame,
+            text=task_text,
+            variable=task_var,
+            command=lambda: toggle_complete(task_var, checkbox),
+            font=task_font,
+            bg=notebook_color,
+            fg="black",
+            selectcolor="white",
+            activeforeground=button_color
+        )
+
+        checkbox.pack(anchor="w", pady=2)
+        todo_list.append({"task": task_text, "completed": task_var, "frame": task_frame})
+        task_frame.pack(anchor="w", padx=10, pady=5, fill="x")
+        entry_task.delete(0, tk.END)
+    else:
+        messagebox.showwarning("Input Error", "Please enter a task!")
+
+def toggle_complete(task_var, checkbox):
+    """Update the checkbox color when the task is marked complete or incomplete."""
+    if task_var.get():
+        checkbox.config(fg=task_complete_color, font=task_font)
+    else:
+        checkbox.config(fg="black", font=task_font)
+
+def delete_completed_tasks():
+    """Delete only ticked tasks from the list."""
+    global todo_list
+    for task in todo_list[:]:
+        if task["completed"].get():
+            task["frame"].destroy()
+            todo_list.remove(task)
+    update_task_list()
+
+def update_task_list():
+    """Refresh the display of tasks."""
+    for widget in task_list_frame.winfo_children():
+        widget.destroy()
+    for task in todo_list:
+        task["frame"].pack(anchor="w", padx=10, pady=5, fill="x")
+
+def on_hover(button, color):
+    """Change button color on hover."""
+    button.config(bg=color)
+
+# Header
+header = tk.Label(app, text="My Notebook To-Do List", font=header_font, bg="#f0f4f8", fg=button_color)
+header.pack(pady=10)
+
+# Notebook look-alike frame for tasks with lines
+task_list_frame = tk.Canvas(app, bg=notebook_color, bd=0, highlightthickness=0)
+task_list_frame.pack(expand=True, fill="both", padx=15, pady=10)
+
+# Draw lines to mimic notebook paper
+for i in range(0, 500, 20):
+    task_list_frame.create_line(10, i, 440, i, fill="#d3d3d3")
+
+# Frame for entry, add, and delete buttons
+frame_task = tk.Frame(app, bg="#f0f4f8")
+frame_task.pack(pady=15)
+
+# Entry for new tasks
+entry_task = tk.Entry(frame_task, width=30, font=task_font, relief="solid", bd=1)
+entry_task.pack(side=tk.LEFT, padx=10)
+
+# "+" button for adding tasks
+button_add_task = tk.Button(frame_task, text="+", command=add_task, font=("Arial", 20, "bold"), bg=button_color, fg="white",
+                            relief="flat", width=3, height=1)
+button_add_task.pack(side=tk.LEFT)
+button_add_task.bind("<Enter>", lambda e: on_hover(button_add_task, button_hover_color))
+button_add_task.bind("<Leave>", lambda e: on_hover(button_add_task, button_color))
+
+# Delete button for deleting only completed tasks
+button_delete_task = tk.Button(app, text="Delete completed task", command=delete_completed_tasks, font=task_font,
+                               bg=button_color, fg="white", relief="flat", padx=10, pady=5)
+button_delete_task.pack(pady=10)
+button_delete_task.bind("<Enter>", lambda e: on_hover(button_delete_task, button_hover_color))
+button_delete_task.bind("<Leave>", lambda e: on_hover(button_delete_task, button_color))
+
+# Run the main loop
+app.mainloop()