Exception handling in Python 3.x

[Peter Otten]

Hrvoje Niksic wrote:

> Peter Otten <__peter__ at web.de> writes:
> 
>>> Note that StopIteration is an internal detail of no relevance whatsoever
>>> to the caller. Expose this is unnecessary at best and confusing at
>>> worst.
>>
>> http://mail.python.org/pipermail/python-list/2010-October/1258606.html
>> http://mail.python.org/pipermail/python-list/2010-October/1259024.html
> 
> Both of these involve suppressing the chaining at the wrong place,
> namely in the outer handler or, worse yet, in the exception display
> mechanism.  Steven, on the other hand, wants his *inner* handler to
> express that the original exception was an implementation detail, a
> business exception such as StopIteration, that is completely irrelevant
> to the actual exception being raised.  The outer handler is the wrong
> place to suppress the chaining because it has no way of distinguishing
> Steven's case from a genuine case of a new exception unexpectedly
> occurring during handling of the original exception.

To quote the Rolling Stones: You can't always get what you want. 

After rereading the original post I still don't get why the workarounds 
provided in those links aren't worth considering.

Peter