01 What is object-oriented, basic object-oriented operations

1.0---Object-oriented concepts
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Class: A category of things with the same attributes and skills; (humans can be made to contain multiple Object(of people) class)
Object: Concrete class of performance, specific to the individual, a real example; (Gao Xiaobo is a person, is a real individual in human beings)

Why study classes, objects: Code blocks can be formed, which can be used to manipulate each other (inheritance between classes, Object-to-class operations), in favor of code specification and reference
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2.0--- class format
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Class Body: Includes two part variable parts (static variable), method (function) part (normal function, construction method)

class Person:           #  Person 类名    name=‘有名字‘             #  静态变量,(也叫静态字段)    animal=‘高级动物‘    faith=‘有信仰‘    def work(self):            #  方法(函数)        print(‘有没有工作‘)    def house(self):        print(self)        print(‘有没有房子‘)

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3.0--- Object-oriented operations
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The operation of a class can be viewed in two ways: by manipulating the class with the class name and manipulating the class by object
from the angle of the class name:
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a.-- dict
Person. dict Manipulate all content in the query class;
b.-- the Almighty. (can be realized and additions and changes)

print(Person.name)   # 查Person.age=25    # 增     在类的函数中也可以操作Person.name=‘高波‘    # 改del Person.animal        # 删操作类中的方法(在工作中基本不用)Person.work(11)

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From the angle of the object

class Person:    name=‘有名字‘ #  静态变量,或者是静态字段    animal=‘高级动物‘    faith=‘有信仰‘    def __init__(self,name,age,sex,hobby):     #  构造方法(每个类都要有构造方法)        self.name=name        self.age=age        self.sex=sex        self.hobby=hobby      # 给对象封装相应的属性(变量,可控);    def work(self):        print(‘有没有工作‘)    def house(self):        print(self)        print(‘有没有房子‘)

ret=Person(‘高波‘,25,‘boy‘,‘不知道‘)
By default, the person's space address is passed to self, and the other arguments are passed in sequentially
#1, the class name + () produces an instance (object, Object space.)
#2, automatically executes the init method in the class, passing the object space to the self parameter of init ,
#3, encapsulates the corresponding property (variable) for the object. Controllable.

Automatically executes the init method in the class, passing the object space to the self parameter of init ,
The procedure for the person () # class name + (): The process of instantiating (the process of creating an object)
Person () Instantiate object, instance, object

a.-- Static variables in a manipulation object
1.0 dict All content in the query object
20,000 can.

print(ret.name)ret.hith=1.68del ret.hobbyret.name=‘高小波‘ print(ret.__dict__)

b.-- Static variables in the object manipulation class

Print (ret.name) # If there are objects in the object will be queried first, there is no word, up one step in the query class
Print (Ret.faith)
c.-- methods in object manipulation classes (working, through objects)
Ret.work ()
Ret.house ()

01 What is object-oriented, basic object-oriented operations