python notepad clone

#~~~~imports~~~~
import PySimpleGUI as sg

import pathlib

WIN_W = 90
WIN_H = 25

'''
sg.ChangeLookAndFeel('SystemDefault')
'''
#~~~~layout~~~~
#/settings
menu_def = [['File', ['New    Ctrl+N', 'Open...    Ctrl+O', 'Save    Ctrl+S','Save As...', '---', 'Page Setup...', 'Print...    Ctrl+P', '---', 'Exit'  ]],
                ['Edit', ['Undo    Ctrl+Z', '---', 'cut    Ctrl+X', 'copy    Ctrl+C', 'Paste    Ctrl+V', 'delete    Del', '---', 'find...    Ctrl+F', 'Find Next    F3', 'Replace...    Ctrl+H', 'Go To...    Ctrl+G', '---', 'Select All    Ctrl+A', 'Time/Date    F5'], ],
                ['format', ['Word Wrap', 'font...'], ],
                ['view', ['Status Bar'], ],
                ['Help', ['View Help', '---', 'About memopad'], ], ]

Ln_numb = 1
Col_numb = 1
#/the layout
layout = [[sg.Menu(menu_def)],
          [sg.Multiline(font=('Consolas', 12), size=(WIN_W, WIN_H-1), key='_BODY_')],
          [sg.StatusBar( text=f'| Ln{Ln_numb},Col{Col_numb}', size=(WIN_W,1), pad=(0,0), text_color='black', background_color='white', relief=sg.RELIEF_FLAT, justification='right', visible=False, key='status_bar' )]
          ]

#/window
window = sg.Window('untitled - notepad', icon=['D:/python/memopad/Notepad.ICO'], border_depth=0, layout=layout, element_padding=(0, 0), margins=(0, 0), resizable=True, return_keyboard_events=True, finalize=True)
window['_BODY_'].expand(expand_x=True, expand_y=True)
window['status_bar'].expand(expand_x=True, expand_y=True)
window['status_bar'].update(visible=False)
#~~~~event loop~~~~
status_bar_switch = True
while True:
    event, values = window.read()
    if event in (None, 'Exit'):
        break

    if event in ('Status Bar'):
        if status_bar_switch:
            window['status_bar'].update(visible=True)
            status_bar_switch = False
        else:
            window['status_bar'].update(visible=False)
            status_bar_switch = True