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

Last Updated : 29 Nov, 2024

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.