Python | pack_forget() and grid_forget()) method in Tkinter

# Imports tkinter and ttk module 
from tkinter import *
from tkinter.ttk import *

# toplevel window 
root = Tk() 

# method to make widget invisible 
# or remove from toplevel 
def forget(widget): 

	# This will remove the widget from toplevel 
	# basically widget do not get deleted 
	# it just becomes invisible and loses its position 
	# and can be retrieve 
	widget.forget() 

# method to make widget visible 
def retrieve(widget): 
	widget.pack(fill = BOTH, expand = True) 

# Button widgets 
b1 = Button(root, text = "Btn 1") 
b1.pack(fill = BOTH, expand = True) 

# See, in command forget() method is passed 
b2 = Button(root, text = "Btn 2", command = lambda : forget(b1)) 
b2.pack(fill = BOTH, expand = True) 

# In command retrieve() method is passed 
b3 = Button(root, text = "Btn 3", command = lambda : retrieve(b1)) 
b3.pack(fill = BOTH, expand = True) 

# infinite loop, interrupted by keyboard or mouse 
mainloop() 

# Imports tkinter and ttk module 
from tkinter import *
from tkinter.ttk import *

# toplevel window 
root = Tk() 

# method to make widget invisible 
# or remove from toplevel 
def forget(widget): 

	# This will remove the widget from toplevel 
	# basically widget do not get deleted 
	# it just becomes invisible and loses its position 
	# and can be retrieve 
	widget.grid_forget() 

# method to make widget visible 
def retrieve(widget): 
	widget.grid(row = 0, column = 0, ipady = 10, pady = 10, padx = 5) 

# Button widgets 
b1 = Button(root, text = "Btn 1") 
b1.grid(row = 0, column = 0, ipady = 10, pady = 10, padx = 5) 

# See, in command forget() method is passed 
b2 = Button(root, text = "Btn 2", command = lambda : forget(b1)) 
b2.grid(row = 0, column = 1, ipady = 10, pady = 10, padx = 5) 

# In command retrieve() method is passed 
b3 = Button(root, text = "Btn 3", command = lambda : retrieve(b1)) 
b3.grid(row = 0, column = 2, ipady = 10, pady = 10, padx = 5) 

# infinite loop, interrupted by keyboard or mouse 
mainloop()