Here's a simple "Hello, World!" application using PyQt6:

def initUI(self): layout = QVBoxLayout()

layout.addWidget(button) layout.addWidget(label)

def main(): app = QApplication(sys.argv) ex = SignalsAndSlotsApp() sys.exit(app.exec())

if __name__ == '__main__': main() In this example, the clicked signal of the push button is connected to the on_button_clicked slot.

self.setLayout(layout) self.setWindowTitle('Signals and Slots') self.show()

self.setGeometry(300, 300, 300, 200) self.setWindowTitle('Hello, World!') self.show()