Thanks for bringing this up. I've added my opinion to the tracker
issue -- I think it's a bug and should be fixed. We should have a
uniform way of checking for issubclass/isinstance.
--Guido
On Fri, May 11, 2012 at 3:33 AM, George-Cristian Bîrzan
wrote:
> As per http://bugs.python.org/issue12029
As per http://bugs.python.org/issue12029 , ABC registration cannot be
used for exceptions. This was introduced in a commit that fixed a
recursion limit problem back in 2008
(http://hg.python.org/cpython/rev/d6e86a96f9b3/#l8.10). This was later
fixed in a different way and improved upon in the 2.x b
