8/9/2023 0 Comments Python inheritanceFinally, we create an object of the subclass and call the methods of the base classes using the object. We then define a subclass Subclass that inherits from both Base1 and Base2. In the example above, we define two base classes Base1 and Base2, each with a single method. To create a subclass that inherits from multiple base classes, we can specify the base classes in the parentheses after the subclass name, separated by commas. This means that the subclass can access and use the attributes and methods of all the base classes. Multiple inheritance is a feature in Python that allows a subclass to inherit from more than one base class. Additionally, the Mammal class has its own behavior, feed_milk(), that is inherited by the Dog and Cat classes through the chain of inheritance. We can see that each instance has its own name attribute, inherited from the Animal class, and its own unique behavior defined in its own class. In this example, we create instances of the Dog and Cat classes and call their respective methods. dog = Dog("Buddy")ĭog.feed_milk() # Output: Feeding milk.Ĭat.feed_milk() # Output: Feeding milk. Both subclasses override the make_sound() method to print out a specific sound that each animal makes. The Dog and Cat subclasses inherit from Mammal, which means they also inherit from Animal indirectly. The Mammal class has an init() method that calls the parent class’s init() method using the super() function, and a feed_milk() method. The Animal class has an init() method and a make_sound() method that doesn’t do anything. Mammal, in turn, inherits from the Animal class. In this example, we have three classes: Animal, Mammal, and two subclasses Dog and Cat that inherit from Mammal. Here is an example of how multi-level inheritance works in Python: class Animal: This creates a chain of inheritance relationships that can be useful in creating complex class hierarchies. Multi-level inheritance in Python is a type of inheritance where a derived class inherits from a parent class, which in turn inherits from another parent class. In this example, we create instances of the Dog and Cat classes and call their respective make_sound() methods. When we create an instance of Dog or Cat, it will have both the attributes and behaviors of the Animal class, as well as its own unique behaviors defined in its own class. We then define two subclasses, Dog and Cat, that inherit from the Animal class.īoth subclasses override the make_sound() method to print out a specific sound that each animal makes. In this example, we define a base class called Animal that has an init() method and a make_sound() method that doesn’t do anything. Here is an example of how inheritance works in Python: Here is an example of how inheritance works in Python: class Animal: The BaseClass is also known as the parent class or superclass, while the DerivedClass is also known as the child class or subclass. In Python, inheritance is implemented through the use of the keyword “class” and the syntax “class DerivedClass(BaseClass):”. ![]() ![]() Inheritance is a powerful feature of object-oriented programming (OOP) that allows a new class to be based on an existing class, inheriting all its attributes and behaviors.
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