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However, if we missed installing Tkinter while installing Python, we can do it
later use the pip command.

2.3 Layout Management

Tkinter is the most popular way to create Graphical User Interfaces (GUIs) in
Python. For building GUIs, Tkinter provides developers with a few standard widgets,
including buttons, labels, and text boxes.

Each of these widgets need to be positioned for user accessibility and widget
focus, and then programmed with underlying application logic so they can work as
intended in response to mouse clicks and other actions.

Tkinter has three built-in layout managers that use geometric methods to
position widgets in an application frame. According to (David, 2018) Widgets are
placed into their parents using special functions called geometry managers. There are
three geometry managers available in Tkinter – pack, grid, and place.