pytest == 4.1
codecov
pytest-cov == 2.9
flake8 >= 3.8.1, < 3.8.999

pytest == 5.2.0
codecov
pytest-cov == 2.9
flake8 >= 3.8.1, < 3.8.999

Update pytest version to deal with attribs error
Update pytest version to deal with attribs error