"Trying to read deleted variable" false negative when importing deleted variable
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Nobody has claimed this yet.
bug
- Dominant language
- Python
- Stars
- 20.6k
- Forks
- 3.3k
- PR merge metrics
- PR metrics pending
Description
# asdf.py
a = 1
del a
print(a) # error: Trying to read deleted variable
# main.py
from asdf import a # no error. runtime ImportError: cannot import name 'a' from 'asdf'
print(a) # no error
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
Start with the two-file reproduction in asdf.py and main.py, then run mypy on the example to confirm the missing diagnostics. Trace how the deleted name is handled across the import and later access; done means mypy reports the invalid import and subsequent use consistently with the direct access in asdf.py.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100