Object-oriented Python

Object-oriented Python

Object-oriented programming is a programmatic approach that needs to be implemented using classes and objects.

Therefore, object-oriented programming is actually the use of "class" and "object".

A class is a template that can contain multiple functions and functions in a template.

Objects are instances created from templates that can execute functions in a class through an instance object

• Class is a keyword that indicates that classes
• Create the object, and then add parentheses to the class name

PS: A function in a class The first argument must be self (see in detail: Encapsulation of the three main characteristics of a class)
A function defined in a class is called a "method"

#Create ClassclassFoo:defBar (self):Print 'Bar'     defHello (self, name):Print 'I am%s'%name#Create object from class Foo objobj =Foo () obj. Bar ()#Execute Bar MethodObj. Hello ('Wupeiqi')#Execute the Hello method

Object-oriented three major features:

The three major characteristics of object-oriented are: encapsulation, inheritance and polymorphism.

First, the package

Encapsulation, as the name implies, encapsulates the content somewhere and then calls the content that is encapsulated somewhere.

Therefore, when using object-oriented encapsulation features, you need:

• Encapsulate content somewhere
• To invoke the encapsulated content from somewhere

First step: encapsulate the content somewhere

Object-oriented Python