text: from tkinter import *
  
  class Janela:
      def __init__(self, toplevel):
          self.fr1 = Frame(toplevel)
          self.fr1.pack()
  
          self.botao1 = Button(self.fr1, text='Oi!')
          self.botao1['background'] = 'green'
          self.botao1['font'] = ('Verdana', '12', 'italic', 'bold')
          self.botao1['height'] = 3
          self.botao1.pack()
  
          self.botao2 = Button(self.fr1, bg='red', font=('Times', '16'))
          self.botao2['text'] = 'Tchau'
          self.botao2['fg'] = 'yellow'
          self.botao2['width'] = 12
          self.botao2.pack()
  
  
  raiz = Tk()
  Janela(raiz)
  raiz.mainloop()
  