I want to highlight unused Python imports as Python syntax errors.

For example, I sometimes forget to remove some packages used for debugging such as time, ipdb. It would be great to see warnings or even errors for the unused imports.

I use Syntastic plugin, but it does not highligh the unused imports or I don't know how to configure it. I have this Syntastic setting set:

let g:syntastic_python_checkers = ['python', 'flake8']
  • You would need to configure a tool that checks for unused imports and integrate it syntastic. According to this flake8 should provide such detection
    – D. Ben Knoble
    Commented Apr 8, 2019 at 12:45
  • You are right, the checks for unused imports are part of flake8. The problem was, that I forgot to install flake8 package into my virtual environment.
    – niekas
    Commented Apr 8, 2019 at 13:41

1 Answer 1


Flake8 already supports checking for unused imports and is integrated with Syntastic.

Python developers should make sure to install flake8 into their user or virtual environment.

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