Improve suggestion in NameError when deleting builtins
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interpreter-core
type-feature
- Dominant language
- Python
- Stars
- 77.2k
- Forks
- 35.9k
- PR merge metrics
- PR metrics pending
Description
Bug report
Bug description:
When deleting a name, python will only find the name in globals and locals, no builtins. However, the suggestion generating code just combined these dict, which makes the suggestion cycle:
>>> del next
Traceback (most recent call last):
File "<python-input-0>", line 1, in <module>
del next
^^^^
NameError: name 'next' is not defined. Did you mean: 'anext'?
>>> del anext
Traceback (most recent call last):
File "<python-input-1>", line 1, in <module>
del anext
^^^^^
NameError: name 'anext' is not defined. Did you mean: 'next'?
According to DPO, the best way to fix this bug is using dis to analyse the last traceback to get the final operation.
CPython versions tested on:
CPython main branch
Operating systems tested on:
No response
Linked PRs
- gh-141389
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the issue with del next and del anext, then inspect the NameError suggestion-generation path and use dis to identify the final operation from the traceback. Compare the approach with linked PR gh-141389; done means deletion no longer suggests the deleted builtin as an alternative.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100