PyQt5 QCalendarWidget – 检查它是否继承了给定的类

在本文中，我们将了解如何检查 QCalendarWidget 是否继承了其他类。为了做到这一点，我们使用继承属性，如果日历对象是继承className的类的实例或继承className的QObject子类的实例，则该属性返回true；否则返回假。
注意：一个类被认为是继承自己的。

In order to do this we will use inherits method with the QCalendarWidget object.
Syntax : calendar.inherits(“QObject”)
Argument : It takes string as argument i.e class name
Return : It return bool 
 

下面是实现

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, 650, 400)
 
        # calling method
        self.UiComponents()
 
        # showing all the widgets
        self.show()
 
    # method for components
    def UiComponents(self):
 
        # creating a QCalendarWidget object
        self.calendar = QCalendarWidget(self)
 
        # setting geometry to the calendar
        self.calendar.setGeometry(50, 10, 400, 250)
 
        # setting cursor
        self.calendar.setCursor(Qt.PointingHandCursor)
 
        # creating label to show the properties
        self.label = QLabel(self)
 
        # setting geometry to the label
        self.label.setGeometry(100, 280, 250, 60)
 
        # making label multi line
        self.label.setWordWrap(True)
 
        # checking if calendar inherits QObject
        value = self.calendar.inherits("QObject")
 
        # setting text to the label
        self.label.setText("Inherits QObject  : " + str(value))
 
 
 
# create pyqt5 app
App = QApplication(sys.argv)
 
# create the instance of our Window
window = Window()
 
# start the app
sys.exit(App.exec())

输出 ：