[ Foro de Python ]

Como puedo poner botones dentro de un boton?

from tkinter import Tk,Label,Button,Entry, Frame
import tkinter as tk
V=tk.Tk()
V.wm_title("interfaz")
app=application(V)

class application(Frame):
    
    def __init__(self,master=None):
        super().__init(master,width=320,height=170)
        self.master=master
        self.pack()
        self.create_widgets()
        
    def VentanaRP(self):
            BD=self.Button(self,text="diseños")
            self.BD.pack()
    def VentanaPR(self):
            BP=self.Button(self,text="productos")
            self.BP.pack()
    def create_widgets(self):
        self.boton1=self.Button(self,text="Registro de trabajo", width=20, height=5,command=self.VentanaRP)
        self.boton2=self.Button (self,text="Productos",width=20,height=5,command=self.VentanaPR)
        self.boton1.config(cursor= ("circle"))
        self.boton2.config(cursor= ("heart"))
        self.boton1.pack()
        self.boton2.pack()
        
app.mainloop()