converting base class instance to derived class instance

François Pinard pinard at
Tue Feb 10 15:45:38 CET 2004

[Michele Simionato]
> François Pinard <pinard at> wrote in message news:<mailman.1372.1076344361.12720.python-list at>...
> > By the way, what is a "heap type"?

> More or less, an user defined type, as opposed to a builtin type:


That sequence of articles was instructive, thanks!

Maybe the Python documentation should be amended, somewhere, somehow, so
the expression "heap type" is explained.  Or maybe it is already and I
just did not find it.  The fact is that it is used in a diagnostic.

François Pinard

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