Python基础20-类的创建与删增改查

1.用函数模拟类的创建

#用函数模拟类的创建
def chinese(name,age):
    def ini():
        dic = {
                'name':name,
                'age':age,
                 'eat':eat,
                'sleep':sleep
               }
        return  dic
    def eat(food):
        print('正在吃%s'%(food))
    def sleep():
        print('正在睡觉')
    return ini()
print(chinese('alex','18')['eat']('土'))

2.类的创建

class chinese:
    country = 'China'
    def __init__(self,name,age):
        self.name = name
        self.age = age
    def eat(self,food):
        print('%s正在吃%s'%(self.name,food))
    def sleep(self):
        print('正在睡觉')
p1 = chinese('alex','18')
print(p1.name)
p1.eat('土')

3.类属性的删增改查/类方法的增改

class chinese:
    country = 'China'
    def __init__(self,name,age):
        self.name = name
        self.age = age
    def eat(self,food):
        print('%s正在吃%s'%(self.name,food))
    def sleep(self):
        print('正在睡觉')
p1 = chinese('alex','18')
print(p1.name)
p1.eat('土')
#查看类属性
print(chinese.country)
#修改类属性
chinese.country = 'America'
print(chinese.country)
#删除类属性
del chinese.country
print(chinese.__dict__)
#增加类属性
chinese.country = 'China'
chinese.location = 'Asia'
print(dir(chinese))
#类方法的增加
def working():
    print('正在工作')
chinese.working = working
chinese.working()
#修改类方法
def test():
    print('测试')
chinese.eat = test
chinese.eat()

4.通过实例修改属性只修改了实例的

#通过实例修改属性只修改实例的
class Chinese:
    country = 'China'
    def __init__(self,name):
        self.name = name
    def play_ball(self,ball):
        print('%s正在打%s'%(self.name,ball))
p1 = Chinese('alex')
print(p1.country)
p1.country = '日本'
print('类的--->',Chinese.country)
print('实例的-->',p1.country)