metaclasses and Exceptions

[Raymond Hettinger]

Michael Hudson <mwh at python.net> wrote > One of the areas where PyPy is
different from CPython is that there
> are no old-style classes or instances, so exceptions are necessarily
> new-style.  This has caused no real problems on any Python program
> we've tried it on yet...

How does PyPy distinguish between instance and class arguments to
raise?

Given:  raise X
Does it pass X or X()?


Raymond Hettinger