I\'m using virtualenv and the virtualenvwrapper. I can switch between virtualenv\'s just fine using the workon command.
workon
me@mymachine:~$ workon
Use deactivate.
deactivate
(my_env) user@user:~/my_env$ deactivate user@user-Lenovo-E40-80:~/my_env$
Note, (my_env) is gone.
(my_env)