from PyQt5.QtWidgets import QApplication, QListWidget, QListWidgetItem app = QApplication([]) list_widget = QListWidget() # Inserting items into the QListWidget item1 = QListWidgetItem("Item 1") list_widget.addItem(item1) item2 = QListWidgetItem("Item 2") list_widget.addItem(item2) item3 = QListWidgetItem("Item 3") list_widget.addItem(item3) # Removing all items from the QListWidget list_widget.clear() list_widget.show() app.exec_()This code creates a QListWidget object and adds three QListWidgetItem objects to it. The clear() function is then called to remove all items within the list. Finally, the QListWidget object is displayed using the show() function. In conclusion, the PyQt5.QtWidgets package library provides the QListWidget class, which is used to display a list of items. The clear() method can be used to remove all items from the list.