In this PyQt5 video we want to learn about PyQt5 QComboBox, PyQt5 QComboBox is a powerful widget for displaying a dropdown list of selectable items in a PyQt5-based graphical user interface (GUI). It is a subclass of PyQt5’s QWidget class and provides a high-level interface for managing and displaying a list of selectable items. The QComboBox class allows developers to create a dropdown list of items that can be selected by the user. It provides a range of built-in features for setting the list of items, selecting and changing the current item, and reacting to changes in the selection.