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

Last Updated : 29 Nov, 2024
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If we want to unmap any widget from the screen or toplevel then forget() method is used. There are two types of forget method pack_forget() ( similar to forget() ) and grid_forget() which are used with pack() and grid() method respectively.

pack_forget() method -

Syntax: widget.pack_forget()

widget can be any valid widget which is visible.

Code #1:

Python 
# 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()


Output:

forget_pack() method

After forget

After forget

After retrieval

After retrieval

Notice

the difference in the position of Button 1 before and after forget as well as after retrieval.

grid_forget() method -

Syntax: widget.grid_forget()
widget can be any valid widget which is visible.

Note :

This method can be used only with grid() geometry methods.

Code #2:

Python 
# 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()


Output:

forget_grid() method

After Forget

After Forget

After Retrieval

After Retrieval

Notice that the position of Button 1 remains same after forget and retrieval. With grid_forget() method, you can place it at any grid after retrieval but generally, the original grid is chosen.


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sanjeev2552
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