Tkmacosx is a Python library extension to the Tkinter module. Change background and foreground colors of a Button, Use ColorVar to change colors of multiple widgets just like StringVar, and much more ...

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Tkinter is a standard GUI library for Python, and it is the most popular Python GUI framework. It is fast, easy-to-use, and provides a wide range of widgets, including buttons, labels, and text boxes.

The Tkinter GUI and its component elements are available for immediate use in Python by importing the "Tkinter" module. One of these components is the "listbox" widget.