Hi Irit,
reading this subthread specifically, I just got a wild idea and I couldn‘t find
any related information in the PEP:
Why not extending BaseException by __group__ among __cause__ and __context__?
Would this reduce some of the added complexity and thus increase broader
acceptance?
Cheers,
Sven
> On 7. Apr 2021, at 20:26, Irit Katriel via Python-Dev <python-dev@python.org>
> wrote:
>
>
> On Mon, Apr 5, 2021 at 2:59 PM Chris Jerdonek <chris.jerdo...@gmail.com>
> wrote:
>> This point reminded me again of this issue in the tracker ("Problems with
>> recursive automatic exception chaining" from 2013):
>> https://bugs.python.org/issue18861
>> I'm not sure if it's exactly the same, but you can see that a couple of the
>> later comments there talk about "exception trees" and other types of
>> annotations.
>>
>> If that issue were addressed after ExceptionGroups were introduced, does
>> that mean there would then be two types of exception-related trees layered
>> over each other (e.g. groups of trees, trees of groups, etc)? It makes me
>> wonder if there's a more general tree structure that could accommodate both
>> use cases...
>>
>> --Chris
>
> Interesting, I commented on that issue - I think we may be able to solve it
> without adding more trees.
>
> That said, we will have groups-of-trees/trees-of-groups. Already today, an
> exception plus its chained __cause__s and __context__s is the root of a
> binary tree of exceptions. The nodes of this tree represent the times that
> the exceptions were caught.
>
> An exception group is a tree where the nodes represent the times when
> exceptions were grouped together and raised.
>
> Irit
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