Flake8 plugin to check against using mutable values as default arguments.
copied from cf-staging / flake8-mutableconda install conda-forge::flake8-mutable
conda install conda-forge/label/cf201901::flake8-mutable
conda install conda-forge/label/cf202003::flake8-mutable
conda install conda-forge/label/gcc7::flake8-mutable