Using super()

[Michele Simionato]

Michele Simionato ha scritto:
> I believe the new style system was designed to allows this sort of
> mixing and
> that there are no issues at all.

Thinking a bit more, there are no issues at all if you know what a new
style class is and if you do not expect it to work as an old-style one
;) For the benefit of the OP, it may be useful to notice that there are
a few differences, most notably on how special methods works. Here is
an example:

class Old:
    pass

old = Old()

old.__str__ = lambda : 'hello!'

print old # special methods defined on the instance are recognized

class New(Old, object):
    pass

new = New()

new.__str__ = lambda : 'hello!' # special methods defined on the
instance are not recognized

print new


HTH,

           Michele Simionato