Python 3 – Tkinter pack() Method
The pack() method in Tkinter is used to organize widgets in blocks before placing them in the window. This method provides simple control over the layout of your window.
Syntax
widget.pack(options)
Parameters
The pack() method can take the following options as parameters:
- anchor – This option is used to determine where the widget will be placed in the block.
- expand – This option is used to make the widget expand to fill the available space that is given to it.
- fill – This option is used to determine how the widget will fill the block that is given to it.
- ipadx – This option is used to add internal padding to the widget in the X-axis direction.
- ipady – This option is used to add internal padding to the widget in the Y-axis direction.
- padx – This option is used to add external padding to the widget in the X-axis direction.
- pady – This option is used to add external padding to the widget in the Y-axis direction.
- side – This option is used to determine which side the widget should be placed on in the block.
Example
Let’s create a simple GUI using the pack() method to better understand how it works.
from tkinter import *
root = Tk()
my_label = Label(root, text="This is my label!")
my_label.pack()
my_button = Button(root, text="This is my button!")
my_button.pack()
root.mainloop()
In the above example, we have created two widgets – a label and a button – and used the pack() method to place them in the window.
The pack() method automatically determines their placement based on the available space and any options that we have provided. As we did not provide any options in this example, the widgets were placed one after the other according to the default settings.
Code Explanation
Let’s go through the code line by line to understand what it does.
“`from tkinter import *
root = Tk()
<pre><code class="line-numbers">These two lines import the necessary packages and create a new window to work with.
“`my_label = Label(root, text=”This is my label!”)
my_label.pack()
These two lines create a new label widget and use the pack() method to place it in the window.
“`my_button = Button(root, text=”This is my button!”)
my_button.pack()
“`
These two lines create a new button widget and use the pack() method to place it in the window.
“`root.mainloop()“`
This line runs the main loop of the application, which keeps the window open until the user closes it.
Conclusion
In conclusion, the pack() method is a simple yet powerful way to control the layout of your widgets in Tkinter. By using the various options available to you, you can easily organize your GUI to suit your needs. Whether you are creating a simple application or a complex one, the pack() method is sure to come in handy.