1. Import Required Modules

import tkinter as tk
from tkinter import filedialog, messagebox, scrolledtext
from datetime import datetime
import os

• tkinter: Provides the base widgets for the GUI (buttons, labels, window).

• filedialog: Allows users to browse and select diary files to load.

• messagebox: Displays success or error pop-ups.

• scrolledtext: A text widget with built-in vertical scrollbar for long entries.

• datetime: Used to get the current date to name diary files.

• os: Checks if a selected file exists before loading it.

2. Create and Configure the Main GUI Window

root = tk.Tk()
root.title(" My Personal Diary")
root.geometry("700x600")
root.config(bg="#f8f1f1")

• Initializes the main window using Tk().

• Sets the window title and size.

• Applies a soft pink background to give it a warm, personal feel.

3. Add a Title Label

title_label = tk.Label(root, text="My Personal Diary", font=("Georgia", 20, "bold"), fg="#333", bg="#f8f1f1")
title_label.pack(pady=10)

• Displays a stylized heading at the top of the app.

• Uses a bold serif font for elegance.

4. Create the Scrollable Text Area

text_area = scrolledtext.ScrolledText(
    root, wrap=tk.WORD, font=("Calibri", 13), bg="#fffdf7", fg="#2e2e2e", relief=tk.SOLID, bd=2
)
text_area.pack(padx=20, pady=10, fill=tk.BOTH, expand=True)

• ScrolledText: A multi-line text area with automatic vertical scrollbar.

• wrap=tk.WORD: Ensures words don’t get cut in the middle when wrapping.

• font, bg, fg: Styling for comfort and readability.

• fill=tk.BOTH, expand=True: Allows the text box to resize with the window.

5. Define the save_entry() Function

def save_entry():
    content = text_area.get("1.0", tk.END).strip()

• Grabs the entire content from the text box.

• "1.0" means from the first line, first character.

• tk.END: Refers to the end of the text.

    if not content:
        messagebox.showerror("Empty Entry", "Diary entry is empty.")
        return

• Displays an error if the entry is empty.

    date_str = datetime.now().strftime("%Y-%m-%d")
    filename = f"Diary_{date_str}.txt"

• Creates a filename based on the current date, e.g., Diary_2025-06-30.txt.

    with open(filename, "w", encoding="utf-8") as file:
        file.write(content)

• Opens a file in write mode and saves the entry content.

    messagebox.showinfo("Saved", f"Diary saved as '{filename}'")

• Shows a success message after saving.

6. Define the load_entry() Function

def load_entry():
    file_path = filedialog.askopenfilename(filetypes=[("Text Files", "*.txt")])

• Opens a file browser dialog to select a .txt file.

    if file_path and os.path.exists(file_path):
        with open(file_path, "r", encoding="utf-8") as file:
            content = file.read()

• If the selected file exists, it opens and reads its content.

        text_area.delete("1.0", tk.END)
        text_area.insert(tk.END, content)

• Clears the current text and loads the selected diary entry.

7. Create Button Frame and Stylish Buttons

button_frame = tk.Frame(root, bg="#f8f1f1")
button_frame.pack(pady=10)

• Creates a frame to hold buttons together in one row.

save_btn = tk.Button(
    button_frame, text="Save Entry", font=("Arial", 12, "bold"),
    command=save_entry, bg="#4CAF50", fg="white", padx=20, pady=5,
    relief=tk.FLAT, cursor="hand2"
)
save_btn.pack(side=tk.LEFT, padx=15)

• Green save button with emoji, flat modern style, and hover-like cursor.

load_btn = tk.Button(
    button_frame, text="Load Entry", font=("Arial", 12, "bold"),
    command=load_entry, bg="#2196F3", fg="white", padx=20, pady=5,
    relief=tk.FLAT, cursor="hand2"
)
load_btn.pack(side=tk.LEFT, padx=15)

• Blue load button to open saved diary files.

8. Start the GUI Loop

root.mainloop()

• Launches the GUI window and keeps it open until manually closed.

• Necessary for all Tkinter applications to become interactive.

Summary of Key Elements