Answers for "virtualenv environment variables"

create virtual environments python

python3 -m venv env
 source ./env/bin/activate
 python -m pip install package

python virtualenv

python -m venv my_env
source my_env/bin/activate

python virtual env

$ virtualenv -p /usr/bin/python2.7 venv

Set Virtual environment

virtualenv env_site

python virtual env

$ pip install --user pipenv