pipenv basics

# Install on os x
brew install pipenv

# Init (automatically detects and converts requiremetns.txt)
pipenv install

# after that you can simply change python version in Pipfile if desired
 
# install packages
pipenv install -r requirements.txt 
 
# or
pipenv install requests~=1.2
 
# lock (create requirements.txt)
pipenv run pip freeze > requirements.txt
 
# print dependencies
pipenv graph

# also usefull
pipenv shell

# run
pipenv run python eval.py

# important to reset 
pipenv --rm


# if you only want to create req file, you can also do this
pip install pipreqs
pipreqs /home/project/location