holoscript.py

import tkinter as tk
from tkinter.filedialog import askopenfilename, asksaveasfilename

def text_editor():
   def open_file():
       filepath = askopenfilename(
           filetypes=[('Text Files', '*.txt'), ('All Files', '*.*')]
       )

       if not filepath:
           return

       txt_edit.delete(1.0, tk.END)
       with open(filepath, 'r') as input_file:
           text = input_file.read()
           txt_edit.insert(tk.END, text)
       window.title(f'HoloScript - {filepath}')

   def save_file():
       filepath = asksaveasfilename(
           defaultextension='txt',
           filetypes=[('Text Files', '*.txt'), ('All Files', '*.*')],
       )

       if not filepath:
           return

       with open(filepath, 'w') as output_file:
           text = txt_edit.get(1.0, tk.END)
           output_file.write(text)
       window.title(f'HoloScript - {filepath}')

   window = tk.Tk()
   window.title('HoloScript')
   window.rowconfigure(0, minsize=800, weight=1)
   window.columnconfigure(1, minsize=800, weight=1)

   txt_edit = tk.Text(window)
   fr_buttons = tk.Frame(window, relief=tk.RAISED, bd=2)
   btn_open = tk.Button(fr_buttons, text='Open', command=open_file)
   btn_save = tk.Button(fr_buttons, text='Save As...', command=save_file)

   btn_open.grid(row=0, column=0, sticky='ew', padx=5, pady=5)
   btn_save.grid(row=1, column=0, sticky='ew', padx=5)

   fr_buttons.grid(row=0, column=0, sticky='ns')
   txt_edit.grid(row=0, column=1, sticky='nsew')

   window.mainloop()


if __name__ == '__main__':
  text_editor()