Multiline lambdas and why you'd want to use them

multiline_lambdas.py

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *


class MainWindow(QWidget):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        self.setWindowTitle('Multiline lambdas')

        self.label = QLabel("Click the button")

        self.button = QPushButton("Click me!")
        self.button.clicked.connect(lambda: (
            self.button.setEnabled(False),
            self.button.setText("You clicked me!"),
            self.label.setText("Woo!")
        ))

        layout = QVBoxLayout()
        layout.addWidget(self.label)
        layout.addWidget(self.button)
        self.setLayout(layout)


if __name__ == "__main__":
    app = QApplication(sys.argv)
    win = MainWindow()
    win.show()
    sys.exit(app.exec_())