Brett Cannon schrieb:
> On 9/20/06, Thomas Heller <theller@python.net> wrote:
>>
>> Is it an oversight that exception instances do no longer support
>> slicing in Python 2.5?
>>
>> This code works in 2.4, but no longer in 2.5:
>>
>> try:
>>     open("", "r")
>> except IOError, details:
>>     print details[:]
>
>
> Technically, yes.  There is no entry in the sq_slice field for the
> PySequenceMethods struct.  Although you can get to the list of arguments by
> going through the 'args' attribute if you need a quick fix.

Well, Nick Coghlan pointed out in private email:

>> According to PEP 352 it should have at most been deprecated along with the
>> rest of Exception.__getitem__:
>>
>> "This also means providing a __getitem__ method is unneeded for exceptions and
>> thus will be deprecated as well."