unused variables in list comprehension not reported
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- Python
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Description
Test code:
def t(items):
return ['{x}' for x in items]
There is a missing f prefix which makes the local x variable unused, but pyflakes doesn't notice this.
$ pyflakes --version
2.2.0 Python 3.8.6 on Linux
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Research direction
Start with the provided Python list-comprehension example and inspect pyflakes' unused-variable analysis for comprehension targets. Add regression coverage showing that x is reported when the string lacks the f prefix, then run the relevant test suite and confirm the diagnostic appears.
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Assessment
- Tech stack
- python
- Domain
- tooling
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 35/100