Python: How to use Python Class Inheritance? | Python Class Inheritance | Python for Beginners
Abul Hossain
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Python class inheritance is a mechanism that allows a class (called the child or derived class) to inherit properties and behaviors from another class (called the parent or base class). Inheritance is an essential feature of object-oriented programming (OOP) that promotes code reuse and modularity.
The child class inherits all the attributes and methods defined in the parent class, including any public, protected, or private members. It can also add its own attributes and methods or override the ones inherited from the parent class.
The syntax for defining a child class that inherits from a parent class in Python is as follows:
class ParentClass:
# Parent class attributes and methods
class ChildClass(ParentClass):
# Child class attributes and methods
The child class is declared by specifying the parent class in parentheses after the child class name. This establishes the inheritance relationship between the two classes.
When an instance of the child class is created, it can access both the attributes and methods inherited from the parent class as well as its own attributes and methods.
Inheritance supports several concepts, such as:
Code reuse: Inheritance allows you to reuse the code defined in the parent class without rewriting it in the child class. This helps in reducing duplication and promoting maintainability.
Polymorphism: Inheritance enables polymorphism, where objects of different classes can be used interchangeably if they inherit from a common parent class. This allows for more flexible and modular code.
Method overriding: The child class can override methods inherited from the parent class by providing its own implementation. This allows customization and specialization of behavior in the child class.
Method extension: The child class can also extend the behavior of methods inherited from the parent class by adding new functionality before or after calling the parent class's method using the
super()
function.
Overall, class inheritance in Python provides a powerful mechanism for creating hierarchical relationships between classes and facilitates code organization, reuse, and flexibility in object-oriented programming.
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