The path to Python-object oriented (Basic)

Object-Oriented Programming: classes, Objects

Object-oriented programming is a way of programming, which requires "classes" and "objects" to be implemented, so object-oriented programming is actually the use of "classes" and "objects".

Introduction to Object-oriented technology

• Class: A collection of objects that describe the same properties and methods, which defines the properties and methods that are common to each object in the collection.
• Object: An instance of a class

creating classes and Objects

1 classPerson :2        3     def __init__(self,name,age):4Self.name =name5Self.age = Age6 7     defTalk (self,msg):8         Print("%s-talk:%s"%(self.name,self.msg))9obj = Person ("Alex", "23")

• Class is the keyword representation, followed by the class name "person"
• Create Object obj = Person (), class name parentheses (arguments, parameters to pass the constructor method into)
• What's a self?

Self:python automatically passes the parameters that represent the object of your instance. The corresponding properties and methods of the object can be called through self.

• Construction method: "__init__ (Self,name,age)"; As long as the object is created, the method is automatically executed and then I can access it directly with the object: Obj.name &obj.age

1P_obj1 = Person ("Alex"," at")2P_obj2 = Person ("LCY"," -")3 Print(P_obj1.name,p_obj1.age)#Alex4 Print(P_obj2.name,p_obj2.age)#LCY

Object-oriented three major features: encapsulation, inheritance, polymorphic encapsulation

The path to Python-object oriented (Basic)