[Python-Dev] Class decorators

Sat Apr 1 00:01:54 CEST 2006

Nick Coghlan wrote:
> [ much good, including the @instance decorator ]

> P.S. If all you want is somewhere to store mutable
> state between invocations, you can always use the
> function's own attribute space

 >>> def f(): print "Hi world from %s!" % f
 >>> f()
 Hi world from <function f at 0x00AE90B0>!
Not really. That assumes the expected name is (permanently) bound to
*this* function in this function's globals. That's normally true, but
not always, so relying on it seems wrong.
 >>> f="a string"
 >>> g()
 Hi world from a string!
And of course, sometimes I really do want shared state, or helpers
(like other methods on a class), or one-time ininitialization plus
per-call parameters (like the send method on 2.5 generators), or ...
-jJ