如何使用对象

#!/usr/bin/env python 
# -*- coding: utf-8 -*-
# _init_方法用来为对象制定对象自己独有的特征


class LuffyStudent:

    school = 'luffycity'

    def __init__(self,name,sex,age):
        self.Name = name
        self.Sex = sex
        self.Age = age



    def learn(self):
        print('is learning')


    def eat(self):
        print('is eating')


    def sleep(self):
        print('is sleeping')


#后产生对象
stu1 = LuffyStudent('王小丫','女',18) # LuffyStudent._init_(stu1,'王二丫','女',18)

# 加上_init_方法后，实列化的步骤
# 1、先产生一个空对象stu1

# 2、LuffyStudent._init_(stu1,'王二丫','女',18)

# 查
print(stu1.Name)
# 王小丫

# 改
stu1.Name = '李二丫'
print(stu1.Name)
#李二丫

# 删除 del
del stu1.Name
print(stu1.__dict__)
{'Sex': '女', 'Age': 18}
# 增
stu1.class_name = 'python开发'
print(stu1.__dict__)
{'Sex': '女', 'Age': 18, 'class_name': 'python开发'}