Python进阶-----使用ininstance和issublcass方法判断类和对象的关系

Posted 2021-01-12 Meanwey

#!/usr/bin/env python
# -*- coding:utf-8 -*-

# isinstance(obj,cls)     #用于判断obj对象是否由cls这个类实例化出来的
                          #若实例化对象的类继承了父类，判断对象isintance父类也返回True
class Foo:
    def __init__(self,name):
        self.name = name

f = Foo(‘jerry‘)

print(isinstance(f,Foo))            #True

# issubclass(cls,classinfo)   #用于判断cls类是否是classinfo的子类

class Foo:
    def __init__(self,name):
        self.name = name

class Bar(Foo):
    pass
f1 = Bar(‘Jerry‘)

print(isinstance(f1,Foo))      #True
print(issubclass(Bar,Foo))     #True