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Exceptions raised while parsing _interpreters configs do not name the offending key #148818

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Exceptions raised while parsing _interpreters configs do not name the offending key#148818
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interpreter-core(Objects, Python, Grammar, and Parser dirs)topic-subinterpreterstype-featureA feature request or enhancement

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@rajkripal
rajkripal
opened on Apr 21, 2026

Errors from _interpreters.create on a bad config (wrong type, bad string) don't say which key failed, making multi-field configs hard to debug.

Per @picnixz on #148799, add a PEP 678 note via _PyErr_FormatNote at each error site in Python/interpconfig.c.

Related: gh-148798.

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  1. rajkripal commented on Apr 21, 2026

    @rajkripal
    rajkripal
    on Apr 21, 2026
    ContributorAuthor

    I plan to pick this up as a small follow-up PR once #148799 is merged, since the most useful note site is the error branch introduced there.

  2. picnixz
    added
    type-featureA feature request or enhancement
    interpreter-core(Objects, Python, Grammar, and Parser dirs)
    topic-subinterpreters
    on Apr 21, 2026
  3. github-project-automation
    added this to Subinterpreterson Apr 21, 2026
  4. github-project-automation
    moved this to Todo in Subinterpreterson Apr 21, 2026
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