In this PyQt5 video we want to learn about PyQt5 QPainter, PyQt5 QPainter is powerful class for performing advanced 2D drawing operations in PyQt5 based graphical user interface (GUI). It is subclass of PyQt5’s QPaintDevice class and provides high level interface for creating custom graphics and visualizations. The QPainter class allows developers to draw custom shapes, lines, curves, and text on a variety of PyQt5 widgets, including windows, dialogs, and custom widgets. It also provides different built in features for setting the pen, brush, and font properties and for transforming and clipping the drawing operations.