How to make a Tkinter GUI for text to speech

Example to use tkinter for a GUI to make the pc talk with text to speech from gtts module.

from io import BytesIO
import pygame
import tkinter as tk
from gtts import gTTS


pygame.init()
pygame.mixer.init()
def speak(text, language='en'):
    mp3_fo = BytesIO()
    tts = gTTS(text, lang=language)
    tts.write_to_fp(mp3_fo)
    x = pygame.mixer.music.load(mp3_fo, 'mp3')
    pygame.mixer.music.play()


root = tk.Tk()

tx = tk.Text(root)
tx.pack()
bt = tk.Button(root, text="PLAY",
    command=lambda: speak(tx.get('0.0', tk.END)))
bt.pack()
root.mainloop()