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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 −

python_gui_programming.htm
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