tkinter

menu_inicial = Tk()
menu_inicial.title('Título')
menu_inicial.iconphoto(True, PhotoImage(file='./icon.png'))
largura_screen = menu_inicial.winfo_screenwidth()
altura_screen = menu_inicial.winfo_screenheight()
menu_inicial.geometry('%dx%d+%d+%d' % (largura, altura, posx, posy))
menu_inicial.resizable(True, True)
menu_inicial.minsize(500x250)
menu_inicial.maxsize(700x400)
menu_inicial.state('zoomed')

menu_inicial['bg'] = 'black'

cmd = Button(menu_inicial, text='Executar', command=lambda: print('texto'))
btn.pack()


menu_inicial.mainloop()