In this article we will see how we can make the QCalendarWidget lowers to the parent stack. After making the QCalendarWidget lower at the stack, QCalendarWidgert will be visually behind (and therefore obscured by) any overlapping sibling widgets.
 
In order to do this we will use lower method with the QCalendarWidget object.
Syntax : calendar.lower()
Argument : It takes no argument
Return : It returns None
Below is the implementation 
 
Python3
| # importing librariesfromPyQt5.QtWidgets import*fromPyQt5 importQtCore, QtGuifromPyQt5.QtGui import*fromPyQt5.QtCore import*importsysclassWindow(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    defUiComponents(self):        # creating a QCalendarWidget object        self.calendar =QCalendarWidget(self)        # setting geometry to the calendar        self.calendar.setGeometry(50, 50, 400, 250)        # adding color effect to the calendar        color =QGraphicsColorizeEffect()        color.setColor(Qt.red)        self.calendar.setGraphicsEffect(color)        # creating a another calendar        another_calendar =QCalendarWidget(self)        # adjusting the size of another calendar        another_calendar.adjustSize()        # lowing the another calendar        another_calendar.lower()# create pyqt5 appApp =QApplication(sys.argv)# create the instance of our Windowwindow =Window()# start the appsys.exit(App.exec()) | 
Output : 
 

 
                                    