3 Suggestions to Make Python Easier For Children

[Steven D'Aprano]

Marko Rauhamaa wrote:

> Expanding #3:
> 
>    >>> o = object()
>    >>> o.x = 3
>    Traceback (most recent call last):
>      File "<stdin>", line 1, in <module>
>    AttributeError: 'object' object has no attribute 'x'
> 
> Why?

There are two intended uses for object and its instances:

- as the base class for all other classes;

- instances can be used as featureless sentinel objects where
  only identity matters.

If you need instances which carry state, then object is the wrong class.


-- 
Steven