IronLanguages / IronLanguages/ironpython3

AttributeError not passed through when calling getattr

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CPython compatibility
Dominant language
C#
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Merged PRs (30d)
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Description

The AttributeError should be passed through when calling getattr. For example:

class test:
    def __getattr__(self, attr):
        raise AttributeError("test")

t = test()
getattr(t, 'x')

throws

AttributeError: 'test' object has no attribute 'x'

instead of

AttributeError: test

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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

Start by running the minimal Python example in the issue and compare its behavior with the expected AttributeError. Trace the getattr handling in IronPython's runtime to find where the exception message is replaced, then verify that the original exception is preserved and the example produces the requested wording.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp, python
Domain
backend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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