我无法理解的对象实例和对象继承实例之间的区别:对象及其继承
1. __dict__
,__module__
,__weakref__
- 在这种性质的?
>>> dir(object)
['__class__', '__delattr__', '__doc__', '__format__', '__getattribute__', '__hash__', '__init__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__']
>>> dir(type('tt',(object,),{}))
['__class__', '__delattr__', '__dict__', '__doc__', '__format__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__']
2.我不能将propetry设置为对象实例。
>>> b= object()
>>> b.f = 3
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'object' object has no attribute 'f'
>>> b = type('tt',(object,),{})()
>>> b.f = 4
这种差异是否来自内建式生成器?为什么?