python 面向对象 isinstance

查看某个对象是否 这个类实例

是返回True 否则返回False

class Foo(object):

    pass

obj = Foo()

class Boo(object):
    pass

print(isinstance(obj, Foo))

print(isinstance(obj, Boo))

'''
True
False
'''

ojb 是 Foo 实例对象  也是父类 Boo 实例对象

class Foo(object):

    pass

obj = Foo()

class Boo(Foo):
    pass

obj = Boo()
print(isinstance(obj, Boo))
print(isinstance(obj, Foo))

'''
True
True
'''