Detailed explanation of examples of python classes

Programming Paradigm

Programming is a process in which programmers use codes composed of specific syntax + data structures + algorithms to tell the computer how to perform tasks. A program is a program that programmers use to get a A set of instructions written based on the results of a task. As the saying goes, all roads lead to Rome. There are many different ways to implement a task. The categories of programming methods are summarized by summarizing the characteristics of these different programming methods, namely for the programming paradigm. Different programming paradigms essentially represent different problem-solving ideas for various types of tasks. Most languages ​​only support one programming paradigm. Of course, some languages ​​can support multiple programming paradigms at the same time. The two most important programming paradigms are procedural programming and object-oriented programming.

Object-oriented programming: OOP object oriented programming

Use 'classes' and 'objects' to create various models to describe the real world.

Several cores facing the opposite side:

Class class: A class is an abstraction, blueprint, and prototype of a class of objects with the same attributes. All these objects are defined in the class. Methods common to attributes (variables (data)).

Object object: An object is an instantiated instance of a class. A class must be instantiated before it can be called in a program. A class can Instantiate multiple objects, and each object can have different attributes.

ENCAPSULATION Encapsulation:

The assignment of data in the class and the internal call are transparent to external users, which makes The class becomes a container, which contains the data and methods of the class.

Inheritance:

A class can derive a subclass, and the attributes and methods defined in this parent class are automatically Inherited by subclasses.

Polymorphism Polymorphism:

Polymorphism is an important feature of object-oriented, one interface, multiple implementations, which means that different subclasses are derived from a base class, and Each subclass inherits the same method name and implements the method of the parent class differently!

 1 def dog(name,gj):#定义dog 2     data={ 3         'name':name, 4         'gj':gj 5  6     } 7     return data 8 def pop(name,gj,lev,hp,mp):#定义人 9     data={10         'name':name,11         'gj':gj,12         'lev':hp,13         'hp':hp,14         'mp':mp15     }16     return data17 18 def bark(d):19     print("dog %s:汪汪"%d['name'])20 21 def walk(p):22     print('person %s:说话'%p['name'])23 24 dog1=dog('大黄','300')25 print(dog1)

The above is the detailed content of Detailed explanation of examples of python classes. For more information, please follow other related articles on the PHP Chinese website!