Add docstrigs, and comments

lpozo · lpozo · commit 38109c765177 · 2019-08-05T08:30:14.000-04:00
diff --git a/pyqt-calculator-tutorial/examples/signals_slots.py b/pyqt-calculator-tutorial/examples/signals_slots.py
@@ -12,15 +12,18 @@
 
 
 def greeting():
+    """Slot function."""
     msg.setText('Hello World!')
 
 
 app = QApplication(sys.argv)
 window = QWidget()
 window.setWindowTitle('Signals, and Slots')
 layout = QVBoxLayout()
+
 btn = QPushButton('Greet')
-btn.clicked.connect(greeting)
+btn.clicked.connect(greeting)  # Connect clicked to greeting()
+
 layout.addWidget(btn)
 msg = QLabel('')
 layout.addWidget(msg)
