-r requirements.txt black==19.10b0 flake8==3.7.9 isort==4.3.21 mypy==0.790 flake8-bugbear==20.1.4 flake8-builtins==1.5.2 flake8-comprehensions==3.2.2 flake8-mutable==1.2.0 flake8-tuple==0.4.1 coverage==5.1 beautifulsoup4==4.9.0