Hooks, aspect-oriented programming, and design by contract

[Pedro Rodriguez]

"Alex Martelli" <aleax at aleax.it> wrote:

<wise remarks snipped>

> In Python 2.2 the dir of a class also gives you the attributes (methods
> or data ones) which come through inheritance, in 2.1 and earlier, it
> does not.  So, again, if you need to support both old and new versions,
> you need to discriminate.  Ugly, yes, but only for the relatively rare
> need of doing metaprogramming (introspection etc) on both old and new
> versions of Python from the same source-code base.
> 

Thanks Alex. I will try to do my best to cope with all versions, and, as
you stated it, this only happens into rare case of metaprogramming, but
it may be worth it.

Thanks for taking time,
-- 

Pedro