simple_notepad.py

from tkinter import *
from tkinter import filedialog

def new_file():
    text_area.delete(1.0, END)

def open_file():
    file = filedialog.askopenfile(mode="r", filetypes=[("Text Files", "*.txt")])
    if file:
        content = file.read()
        text_area.delete(1.0, END)
        text_area.insert(END, content)
        file.close()

def save_file():
    file = filedialog.asksaveasfile(mode="w", defaultextension=".txt", filetypes=[("Text Files", "*.txt")])
    if file:
        content = text_area.get(1.0, END)
        file.write(content)
        file.close()

# Creating main window
root = Tk()
root.title("Simple Notepad")
root.geometry("600x400")

# Creating Menubar
menubar = Menu(root)

# File Menu
file_menu = Menu(menubar, tearoff=0)
menubar.add_cascade(label="File", menu=file_menu)
file_menu.add_command(label="New", command=new_file)
file_menu.add_command(label="Open", command=open_file)
file_menu.add_command(label="Save", command=save_file)
file_menu.add_separator()
file_menu.add_command(label="Exit", command=root.destroy)

# Adding Edit Menu (basic operations)
edit_menu = Menu(menubar, tearoff=0)
menubar.add_cascade(label="Edit", menu=edit_menu)
edit_menu.add_command(label="Cut", command=lambda: text_area.event_generate("<<Cut>>"))
edit_menu.add_command(label="Copy", command=lambda: text_area.event_generate("<<Copy>>"))
edit_menu.add_command(label="Paste", command=lambda: text_area.event_generate("<<Paste>>"))

# Adding Help Menu
help_menu = Menu(menubar, tearoff=0)
menubar.add_cascade(label="Help", menu=help_menu)
help_menu.add_command(label="About", command=lambda: print("Simple Notepad by Jamil Ahmed"))

# Creating Textbox
text_area = Text(root, wrap="word", font=("Arial", 12))
text_area.pack(expand=True, fill=BOTH)

# Display Menu
root.config(menu=menubar)

root.mainloop()