virtualenv

virtualenv is advertised as another type of cordoned off environment for python. Similar to anaconda environments.

commands:

1. virtualenv
   1. Creates dir
2. virtualenv –clear
3. virtualenv -p python3
4. virtualenv testvirtualenv
5. virtualenv –system-site-packages r-tensorflow
   1. creates directory r-tensorflow with virtualenv. The python in this environment will have access to the system python packages.
6. virtualenv –system-site-packages mytensorflow
7. virtualenv –no-pip
8. virtualenv –extra-search-dir=SEARCH_DIRS
   1. directory to use to look for pip/setuptools/distribute
9. activate
10. source testvirtualenv/bin/activate