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Today Xiaobian to share with you what the three object-oriented features of Python related knowledge points, detailed content, clear logic, I believe most people still know too much about this knowledge, so share this article for everyone to refer to, I hope you read this article after some gains, let's take a look at it together.

Q: What about Python's three object-oriented features?

Python is an object-oriented language. Object-oriented has three characteristics: encapsulation, inheritance, polymorphism.

Here are the three characteristics:

1. Encapsulation

Hide the object's attributes and implementation details, providing public access only. Set properties to private in python by starting with a double underscore.

Benefits: 1. Isolate change;2. Easy to use;3. Improve reusability;4. Increased security.

2. Inheritance

Inheritance is a way to create new classes. In Python, a new class can inherit one or more parent classes, which can also be called base classes or superclasses. A new class is called derived classes or subclasses. That is, a derived class inherits the fields and methods of the base class. Inheritance also allows an object of a derived class to be treated as a base class object. For example, there is a design where an object of type Dog derives from the Animal class, which simulates the "is an (is-a)" relationship.

Python class inheritance is divided into: single inheritance and multiple inheritance

class ParentClass1:#define parent class ParentClass2: #define parent class SubClass1(ParentClass1): #single inheritance, base class is ParentClass1, derived class is SubClassclass SubClass2(ParentClass1,ParentClass2): #python supports multiple inheritance, separate multiple inherited classes with commas

3. Polymorphism

A variety of things embodied in the form of function rewriting is actually a manifestation of polymorphism. In Python, polymorphism refers to objects whose references to parent classes point to child classes.

Steps to achieve polymorphism:

1. Define a new subclass

2. Overwrite the corresponding parent class method

3. Use the method of the subclass to process directly, without calling the method of the parent class

The benefits of polymorphism:

(1) Increased flexibility of procedures

(2) Increased program scalability

That's all for Python's three object-oriented features. Thank you for reading! I believe everyone has a great harvest after reading this article. Xiaobian will update different knowledge for everyone every day. If you want to learn more knowledge, please pay attention to the industry information channel.

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