python / python/cpython

Update `ExceptionGroup`s to use a tuple of errors where possible

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Python
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Description

Documentation

Now that #141736 has been merged, the repr() of ExceptionGroups is slightly more efficient when a tuple is used as the exceptions sequence. Lists are fine, just not as optimal when the sequence of exceptions is already known/constant.

The docs should be updated to use tuples of exception sequences where reasonable to encourage 'best practice'.

Linked PRs
  • gh-142393

Contributor guide

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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

Review the documentation examples that construct ExceptionGroups, using the change from #141736 as context for why tuples are preferred. Compare the proposed updates in linked PR #142393 and check that each changed example uses a tuple only where the exception sequence is already known or constant.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
documentation
Issue type
Documentation
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
20/100

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