SoFunction
Updated on 2025-03-10

Interpretation of pack usage in Python-tkinter module

Use of pack in Python tkinter module

Python'stkinterIn the modulepackLayout Manager is a simple and powerful tool for automatically managing the layout of window components.

packAllows you to add components to a window and automatically arrange them according to the order in which they are added.

The following ispackDetailed description of the function, including its parameters and usage:

Basic syntax

(options)

inwidgetis the component you want to add to the window (e.g.Button、Labelwait),optionsis an optional keyword parameter list that controls the layout of components.

Parameter description

  • side: Specifies which side of the parent container the component should be placed. Optional values ​​are"top"、"bottom"、"left"or"right". By default, components are arranged from top to bottom in the order they are added.
  • anchor: Specifies how the component aligns within its allocated space. Optional values ​​are"n"(North, top aligned),"s"(South, bottom aligned),"e"(East, right aligned),"w"(Western, left aligned),"center"(Center Align) etc.
  • fill: Specifies whether the component expands within its allocated space to fill the space. Optional values ​​are"x"(Horizontal filling),"y"(Vertical filling),"both"(Horizontal and vertical filling) or""(Not filled).
  • expand: Boolean value, ifTrue, the component will expand to fill the available space. This usually goes withfillUse parameters in combination.
  • padx: Specifies the amount of fill that a component is in the horizontal direction of its allocated space. It can be a number or a tuple, specifying left and right fills respectively.
  • pady: Specifies the amount of fill a component in the vertical direction of its allocated space. It can be a number or a tuple, specifying up and down padding.
  • ipadx: The amount of width increase inside the component.
  • ipady: The amount of height increase inside the component.

Sample code

The following is a usepackAn example of the layout manager that shows how to use different parameters to control the layout of a component:

import tkinter as tk

root = ()

# Create a button and use pack layoutbutton1 = (root, text="Button 1")
(side="left", padx=10, pady=5)

# Create another button and use different parametersbutton2 = (root, text="Button 2")
(side="right", padx=10, pady=5, fill="both", expand=True)

# Run the main loop()

In this example,button1Placed to the left of the window and has a 10-pixel horizontal fill and a 5-pixel vertical fill.

  • button2Placed on the right side of the window, also filled, and setfill="both"andexpand=True, which means it expands to fill the remaining horizontal and vertical space.
  • packLayout Manager is ideal for quick and simple layout requirements, but it does not support complex layout controls such as relative dimensional adjustments between components. For more advanced layout requirements, you may need to usegridorplaceLayout Manager.

Summarize

The above is personal experience. I hope you can give you a reference and I hope you can support me more.