Python 3 - Tkinter pack() Method

This geometry manager organizes widgets in blocks before placing them in the parent widget.

Syntax

widget.pack( pack_options )

Here is the list of possible options −

• expand − When set to true, widget expands to fill any space not otherwise used in widget's parent.

• fill − Determines whether widget fills any extra space allocated to it by the packer, or keeps its own minimal dimensions: NONE (default), X (fill only horizontally), Y (fill only vertically), or BOTH (fill both horizontally and vertically).

• side − Determines which side of the parent widget packs against: TOP (default), BOTTOM, LEFT, or RIGHT.

Example

Try the following example by moving cursor on different buttons −

# !/usr/bin/python3
from tkinter import *

root = Tk()
frame = Frame(root)
frame.pack()

bottomframe = Frame(root)
bottomframe.pack( side = BOTTOM )

redbutton = Button(frame, text = "Red", fg = "red")
redbutton.pack( side = LEFT)

greenbutton = Button(frame, text = "Brown", fg = "brown")
greenbutton.pack( side = LEFT )

bluebutton = Button(frame, text = "Blue", fg = "blue")
bluebutton.pack( side = LEFT )

blackbutton = Button(bottomframe, text = "Black", fg = "black")
blackbutton.pack( side = BOTTOM)

root.mainloop()

When the above code is executed, it produces the following result −