Add-pipenv-for-env-pinning-and-setup/pipenv

[james-see]

Is your feature request related to a problem? Please describe.
It is painful to maintain versions of python and pip installed dependancies, even with having to setup virtualenv.

Describe the solution you'd like
Pipenv combines both of these things in a simple paradigm.
https://www.makeuseof.com/pipenv-python-environment/

Describe alternatives you've considered
Poetry, venv, virtualenv, Makefile, Gradlew, anaconda (ugh), pyenv with no venv.

[MthwRobinson]

Hi @james-see. We're not opposed to pipenv but don't want to be overly opinionated on what solution people use for virtual environments. We do have requirement files available under requirements/*.txt, you can create a pipenv environment from those files using these instructions.

[james-see]

Including a pipenv dotfile does not force people to use it, it basically adds pipenv as an option without them having the frieze out from requirements.txt to pipenv. Saves them a step. Could have the circle-ci auto keep the pipenv dotfile up to date.