PyQt5 QCalendarWidget – Selection Changed signal

In this article, we will see how we can get the selection changed signal from the QCalendarWidget. Selection changed signal is emitted when the currently selected date is changed. The currently selected date can be changed by the user using the mouse or keyboard.

In order to do this we will use selectionChanged method with the QCalendarWidget object.
Syntax : calendar.selectionChanged.connect(lambda: print(“Selection Changed”))
Argument : It takes method as argument
Action Performed : It will print the message whenever activated signal get emitted 

Below is the implementation 

Python3

# importing libraries
from PyQt5.QtWidgets import *
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import *
from PyQt5.QtCore import *
import sys


class Window(QMainWindow):

    def __init__(self):
        super().__init__()

        # setting title
        self.setWindowTitle("Python ")

        # setting geometry
        self.setGeometry(100, 100, 600, 400)

        # calling method
        self.UiComponents()

        # showing all the widgets
        self.show()

    # method for components
    def UiComponents(self):

        # creating a QCalendarWidget object
        calendar = QCalendarWidget(self)

        # setting geometry to the calendar
        calendar.setGeometry(10, 10, 400, 250)

        # creating a label
        label = QLabel(self)

        # setting geometry to the label
        label.setGeometry(100, 280, 250, 60)

        # making label multi line
        label.setWordWrap(True)

        # text
        text = "Selection Changed signal (No.) : "

        # current count
        self.count = 0

        # getting the selection change signal and
        # when receives the signal printing the message
        calendar.selectionChanged.connect(lambda: label.setText(text + str(get_count())))

        # method to increase the count value
        def get_count():
            self.count += 1
            return self.count


# create pyqt5 app
App = QApplication(sys.argv)

# create the instance of our Window
window = Window()

# start the app
sys.exit(App.exec())

Output :