“pyflakes“ failed during execution due to “‘FlakesChecker‘ object has no attribute ‘NAMEDEXPR‘“

2020-01-21 运行$ flake8 /path/to/file  报了如下错误：

"pyflakes" failed during execution due to "'FlakesChecker' object has no attribute 'NAMEDEXPR'"
Run flake8 with greater verbosity to see more details

原因是flake8依赖pyflake，而pyflake虽然修复了这个问题，但并未release到pypi

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解决：

pip install git+https://github.com/PyCQA/pyflakes.git --user --upgrade

如果github太慢可以换成它的加速镜像站：

pip install git+https://hub.fastgit.org/PyCQA/pyflakes.git --user --upgrade