Run flake8

#Install flake8
python -m pip install flake8

#Run flake8 lint check against file
flake8 path/to/code/to/check.py

#Run flake8 lint check for specific errors or warnings by their reference code
flake8 --select E123,W503 path/to/code/to/check.py

#Run flake8 lint check and ignore specific errors or warnings by their reference code
flake8 --ignore E24,W504 path/to/code/to/check.py

Source: flake8.pycqa.org

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