self.toolButton_folder.setCursor(QtGui.QCursor(QtCore.Qt.PointingHandCursor))

As an AI language model, I do not have access to the context or the full code of this statement. However, I can explain that this line of code sets the cursor of a tool button named "self.toolButton_folder" to a pointing hand cursor when the mouse hovers over it.

The pointing hand cursor is a visual cue that indicates to the user that the button is clickable and will perform an action when clicked. The cursor change is achieved using the setCursor() method from the QtGui module of PyQt5, which accepts a cursor shape as a parameter.

In this case, the cursor shape used is QtCore.Qt.PointingHandCursor, which is a predefined shape in the QtCore module of PyQt5. This shape resembles a hand with a pointing finger, and is commonly used for clickable elements in user interfaces.