TEXTEDITOR.py

import tkinter as tk 
from tkinter import  filedialog, messagebox

def new_file():
    text.delete(1.0, tk.END)


def open_file():
    file_path = filedialog.askopenfilename(defaultextension=".txt", filetypes=[("Text Files","*.txt")])
    if file_path:
        with open(file_path,'r') as  file:
            text.delete(1.0,tk.END)
            text.insert(tk.END, file.read())
    
def save_file():
    file_path = filedialog.asksaveasfilename(defaultextension=".txt", filetypes=[("Text Files","*.txt")])    
    if file_path:
        with open(file_path, 'w') as file:
            file.write(text.get(1.0 , tk.END))
            messagebox.showinfo("info", "File saved ")

root = tk.Tk()
root.title("Simple Text Editor")
root.geometry("900x700")

menu = tk.Menu(root)
root.config(menu=menu)
file_menu= tk.Menu(menu)
menu.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.quit)

text = tk.Text(root , wrap=tk.WORD , font=("",12,), fg="blue", )
text.pack(expand=tk.YES, fill=tk.BOTH)

root.mainloop()