查看complex的__class__属性

a = 5+2j

print(a.__class__)

print(a.__class__.__class__)

'''

<class 'complex'>

<class 'type'>

'''

查看int的__class__属性

a = 123

print(a.__class__)

print(a.__class__.__class__)

'''

<class 'int'>

<class 'type'>

'''

查看str的__class__属性

a = 'str'

print(a.__class__)

print(a.__class__.__class__)

'''

<class 'str'>

<class 'type'>

'''

class ObjectCreator(object):

    pass

print(type(ObjectCreator))#输出类的类型

print(type(ObjectCreator()))#<class '__main__.ObjectCreator'>

print(ObjectCreator.__class__)#输出类的类型

'''

<class 'type'>

<class '__main__.ObjectCreator'>

<class 'type'>

'''