flask-extension

There are different conventions for virtual environments.
Like creating all the virtual environments on a folder ( "~/virtualenvs/" ),
or naming the virtual environment with a leading dot ( ".../project/path/.venv" ),
right now the virtual environment is created inside the project folder with a default name "venv"

If a PEP is called on a function, and the policy denies its execution, there should be a parameter that allows to specify a return value and/or a function that returns such value.