Fast access/manage to virtualenv between different python versions.
Like
user@host$ . venv
Virtual env: Python3.6.4
(3.6.4) user@host$ python -V
Python 3.6.4
(3.6.4) user@host$ unvenv
user@host$
Install by
pip install cli_venv
Use/create default/specific virtualenv in this directory
. venv
Virtual env: Python2.7.13
Environment not exists.
Create one? [Y/n]y
...
(2.7.13) duck@host:~/venv$
. venv python3
Virtual env: Python3.6.4
Environment not exists.
Create one? [Y/n]y
...
(3.6.4) duck@host:~/venv$
Sync packages in other virtualenv to current virtualenv
venv sync
Exit virtual env
unvenv
Delete default/specific virtualen
venv delete
venv delete python3