python面向对象(反射)(四)

class Animal:
    def eat(self):
        print("刚睡醒吃点儿东西")

class Cat(Animal):
    def play(self):
        print("猫喜欢玩儿")

c = Cat()

print(isinstance(c, Cat)) # True
print(isinstance(c, Animal)) # True

a = Animal()
print(isinstance(a, Cat)) # 不能向下判断  False

print(type(a)) # 返回 a的数据类型
print(type(c)) # 精准的告诉你这个对象的数据类型

# 判断.xx类是否是xxxx类的子类
print(issubclass(Cat, Animal))  # True
print(issubclass(Animal, Cat))  # False

from types import FunctionType, MethodType  #  引入方法和函数的模块
class Person:
    def chi(self): # 实例方法
        print("我要吃鱼")

    @classmethod
    def he(cls):
        print("我是类方法")

    @staticmethod
    def pi():
        print("你是真滴皮")

p = Person()

print(isinstance(Person.chi, FunctionType)) # True
print(isinstance(p.chi, MethodType)) # True

print(isinstance(p.he, MethodType)) # True
print(isinstance(Person.he, MethodType)) # True

print(isinstance(p.pi, FunctionType)) # True
print(isinstance(Person.pi, FunctionType)) # True

class Person:
    def __init__(self, name,wife):
        self.name = name
        self.wife = wife


p = Person("宝宝", "林志玲")

print(hasattr(p, "wife")) 
print(getattr(p, "wife")) # p.wife

setattr(p, "wife", "胡一菲") # p.wife = 胡一菲
setattr(p, "money", 100000) # p.money = 100000

print(p.wife)
print(p.money)

delattr(p, "wife") # 把对象中的xxx属性移除. 并不是p.wife = None
print(p.wife)