PyCQA / PyCQA/pyflakes

False positive: F401 'foo' imported but unused; when marking variable as global variable in a function

Open
#389 1 comment 2 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Dominant language
Python
Stars
1.5k
Forks
190
Avg merge
8m
Merged PRs (30d)
13

Description

False positive: F401 'foo' imported but unused

a.py:

from b import foo

def test():
    global foo
    print(foo)
    foo = 'bar'
    print(foo)

test()

b.py:

foo = 'foo'

Also resolves this PyCharm Error

Contributor guide

No contributing guide indexed for this repository

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

Reproduce the a.py and b.py example from the issue first, focusing on the global declaration and imported foo. Trace the diagnostic that reports F401 and add coverage for this case; done means the example no longer reports foo as unused while ordinary unused imports still do.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
tooling
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.