how to automatically enter into virtualenv-python2.7 without manually activate?Thanks

[appleyuchi]

Sorry to interrupt.
Could you tell me how to automatically enter virtualenv without manually activate?
I want an effect like this:
①double click a xx.py file and enter into sublime
②without manual activate the virtualenv,it already enter into python2.7 of virtualenv
③if I want to change to virtualenv-python3.5,I can use shift+ctrl+p->activate->python3.5

Why I want this effect?
Because in my .bashrc ,I added the following 3 lines
**alias py2.7="source /home/appleyuchi/.virtualenvs/python2.7/bin/activate&&deactivate&&source /home/appleyuchi/.virtualenvs/python2.7/bin/activate"

alias py3.5="source /home/appleyuchi/.virtualenvs/python3.5/bin/activate&&deactivate&&source /home/appleyuchi/.virtualenvs/python3.5/bin/activate"
py2.7**

So,dear sir ,does sublime-text-virtualenv has similar settings?
Thanks very much .
if i lauch sublime in terminal already in virtualenv-python2.7,then I cannot use sublime-text-virtualenv to change to python3.5,so this is not a good solution.
Many Thanks again

[appleyuchi]

I mean,my terminal can automatically enter into virtualenv-python2.7 and switch between 2.7 and 3.5 with above two "alias commands"
Does this sublime plugin has similar functions?
thanks