Ler artigos online usando Tkinter

from tkinter import *
from gtts import gTTS
import os
from newspaper import Article
import nltk
import playsound
root = Tk()


class ler_texto():
    def __init__(self):
        self.root = root
        self.janela()
        self.lertexto()
        root.mainloop()

    def janela(self):
        self.root.title("Conversor/Converter de Artigo")
        self.root.geometry("400x250")
        self.root.resizable(False, False)

    def lertexto(self):
        # Escrever texto
        self.texto = StringVar()
        self.lb_texto = Label(text=" Artigo a ser convertido ",
                              font=("Helvetica", '10'),
                              bg="#4c4c4c", fg='#ffffff')
        self.lb_texto.place(relx=0.4, rely=0.05)
        self.texto_entry = Entry(textvariable=self.texto)
        self.texto_entry.place(relx=0.15, rely=0.2, relwidth=0.7)
        # Linguagem
        self.radio = StringVar()
        self.lblradio = Label(text=" Escolha a linguagem ",
                              font=("Helvetica", '10'), bg="#4c4c4c",
                              fg='#ffffff')
        self.lblradio.place(relx=0.35, rely=0.4)
        self.ingles = Radiobutton(text="Inglês", variable=self.radio,
                                  value='en')
        self.ingles.place(relx=0.15, rely=0.55)
        self.pt = Radiobutton(text="Português", variable=self.radio
                              , value='pt')
        self.pt.place(relx=0.4, rely=0.55)
        self.es = Radiobutton(text="Espanhol", variable=self.radio
                              , value='es')
        self.es.place(relx=0.7, rely=0.55)

        # Butão
        self.bt_calcular = Button(text="Falar", bd=2,
                                  font=('verdana', '8', 'bold'), bg='gray18',
                                  fg='white', command=self.butao1)
        self.bt_calcular.place(relx=0.45, rely=0.7, relwidth=0.2, relheight=0.1)

    def butao1(self):
        texto1 = self.texto.get()
        lg = self.radio.get()
        article = Article(texto1, language=lg)
        article.download()
        article.parse()
        nltk.download('punkt')
        article.nlp()
        text = article.text
        speech = gTTS(text=text, lang=lg, slow=False)
        filename = '236.mp3'
        speech.save(filename)
        playsound.playsound(filename)
        os.remove(filename)




ler_texto()