wheel==0.33.4
flake8==3.7.7
isort==4.3.18
black==19.3b0;python_version>"2"

wheel==0.33.4
flake8==3.7.7
isort==4.3.20
black==19.3b0;python_version>"2"

Update isort from 4.3.18 to 4.3.20
Update isort from 4.3.18 to 4.3.20