Introduction to TKInter pack()

What is TKInter?

TKInter is the standard GUI (Graphical User Interface) package for Python. It is a thin object-oriented layer on top of the Tcl/Tk GUI toolkit. TKInter provides a fast and easy way to create GUI applications.

What is pack()?

The pack() method is used to place widgets inside a parent widget. It arranges widgets in a block-like structure, with each widget placed beside the previous one. It ensures that they are all visible and takes care of any resizing that may occur.

Syntax

The syntax of pack() is as follows:

widget.pack(options)

Here, widget is the widget to be packed and options can be used to specify how the widget should be packed.

Common Options

The most commonly used options with pack() are:

• side: The side of the parent widget to pack the widget. It can be TOP, BOTTOM, LEFT or RIGHT.
• fill: Whether to fill the entire parent widget horizontally or vertically. Can be BOTH, X or Y.
• expand: Whether to expand the widget if the parent widget grows.
• anchor: Where to anchor the widget if there is extra space. Can be N, S, E, W, or CENTER.

Example

from tkinter import *

root = Tk()

label1 = Label(root, text="Hello, World!", fg="white", bg="black")
label2 = Label(root, text="This is TKInter", fg="white", bg="black")

label1.pack(side=TOP, padx=10, pady=10)
label2.pack(side=TOP, padx=10, pady=10)

root.mainloop()

In this example, we create two labels and pack them at the top of the parent widget with some padding on both sides.

Conclusion

The pack() method is a popular way to arrange widgets in TKInter. It is easy to use and provides many options to customize the layout. Whether you are a beginner or an experienced programmer, pack() is an essential tool for building GUI applications with Python.