pydata / pydata/xarray

exception groups

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dependencies enhancement topic-error reporting
Dominant language
Python
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Description

What is your issue?

As I mentioned in the meeting today, we have a lot of features where the the exception group support from PEP654 (which is scheduled for python 3.11 and consists of the class and a syntax change) might be useful. For example, we might want to collect all errors raised by rename in a exception group instead of raising them one-by-one.

For python<=3.10 there's a backport that contains the class and a workaround for the new syntax.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading PEP 654 and the linked exceptiongroup backport, then review how xarray features such as rename currently raise errors. Define the supported exception-group scope and syntax strategy for Python versions before implementation; done means an agreed design and support for collecting rename errors.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
data
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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