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PEP 678: Clarify how the notes tuple is updated and when it is copied #2377

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Merged
JelleZijlstra merged 6 commits into from
Mar 3, 2022
Merged

PEP 678: Clarify how the notes tuple is updated and when it is copied #2377

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23296de
PEP 678: clarify internals and heading
Zac-HD Mar 2, 2022
ab5f093
PEP 678: omit impl details
Zac-HD Mar 2, 2022
7c28ab4
PEP 678: clarify rejected idea
Zac-HD Mar 2, 2022
2491278
PEP 678: link cross-reference
Zac-HD Mar 2, 2022
0a20986
PEP 678: final details update
Zac-HD Mar 3, 2022
0d150fa
Apply suggestions from code review
Zac-HD Mar 3, 2022
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PEP 678: link cross-reference
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@Zac-HD
Zac-HD committed Mar 2, 2022
commit 24912782305b6447f77ef1fed50b2b2b6bc618c8
5 changes: 4 additions & 1 deletion pep-0678.rst
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Expand Up @@ -59,6 +59,7 @@ therefore propose to add:

Example usage
-------------
::

>>> try:
... raise TypeError('bad type')
Expand Down Expand Up @@ -198,6 +199,8 @@ implements ``.add_note()`` and ``__notes__``.
Rejected Ideas
==============

.. _print_idea:

Use ``print()`` (or ``logging``, etc.)
--------------------------------------
Reporting explanatory or contextual information about an error by printing or
Expand Down Expand Up @@ -323,7 +326,7 @@ Don't attach notes to ``Exception``\ s, just store them in ``ExceptionGroup``\ s
--------------------------------------------------------------------------------
The initial motivation for this PEP was to associate a note with each error
in an ``ExceptionGroup``. At the cost of a remarkably awkward API and the
cross-referencing problem discussed under "use ``print()``" above, this
cross-referencing problem discussed `above <print_idea>`__, this
use-case could be supported by storing notes on the ``ExceptionGroup``
instance instead of on each exception it contains.

Expand Down