[ZODB-Dev] Persistent unhashable?

[Christian Robottom Reis]

On Thu, 5 Jul 2001, Greg Ward wrote:

> Neither, really: _p_oid (along with the other magical ZODB attributes)
> never actually appears in an object's __dict__.  (Seems sensible to me,
> since they are magical.)  However, I have never seen an AttributeError

Right. :-)

> from accessing _p_oid on a Persistent object -- so presumably the
> persistence machinery either supplies None (for objects not yet "in the
> database") or an 8-byte string (for objects with an OID).

It supplies None, I've just tested, and the string when set.

> Here is our intermediary class that all persistent classes must derive
> from (docstrings and comments removed):

Not a lot to comment and docstring :-) My class looked _exactly_ like
yours.

> constructor does is call its superclass constructor, there's no point:
> that's what Python would do for you if it doesn't find a constructor.

News to me. Duh. Thanks.

Take care,
--
/\/\ Christian Reis, Senior Engineer, Async Open Source, Brazil
~\/~ http://async.com.br/~kiko/ | [+55 16] 274 4311