[Zope3-dev] Should containers tell you if they accept empty string keys?

[Guido van Rossum]

Slightly off-topic (and perhaps misinformed): when setObject() returns
the key it generates, can you use that key to access the object?  In
particular, if you pass the returned key to another call to
setObject(), will it overwrite the object whose setObject() call
returned that key, or will it generate a new key again???  I'm
worrying about idempotency here.

--Guido van Rossum (home page: http://www.python.org/~guido/)