flake8
flake8-bugbear; python_version >= '3.5'
flake8-pyi; python_version >= '3.5'
lxml; sys_platform != 'win32'
typed-ast>=0.6.3; sys_platform != 'win32' or python_version >= '3.5'
pytest>=2.8
pytest-xdist>=1.13
pytest-cov>=2.4.0
typing>=3.5.2; python_version < '3.5'
