[Jython-dev] Exception Handling difference between CPython and Jython

[Randy J. Y. <ry...@we...>]

Howdy,

There appears to be a slight difference in the exception handling 
between CPython and Jython.
Before I dig into CPython's code I want to see if this is a known problem.

Here is my test case:
-----------------------------------
class Foo:
    def __getattr__(self, key):
        print 'getting %s' % key
        raise KeyError, key

foo = Foo()
if not foo: print 'no foo'
-------------------------------------

CPython has the following output:
=========================
getting __nonzero__
getting __len__
=========================

Where Jython does this:
=========================
WE: getting __nonzero__
Traceback (innermost last):
  File "tc.py", line 7, in ?
  File "tc.py", line 4, in __getattr__
KeyError: __nonzero__
==========================

Since _getattr__ always raises an error, it seems the CPython is doing 
something magical under the hood.

Has anyone seen anything similar?

Thanks,
Randy Jay Yarger (ry...@we...)
Phabric Development (www.phabric.org) @ Web Elite (www.webelite.com)