cooper@lolbuntu:~/repos/bandersnatch$ /usr/bin/python3 --version
Python 3.5.2
cooper@lolbuntu:~/repos/bandersnatch$ virtualenv -p python3 .
Already using interpreter /usr/bin/python3
Using base prefix '/usr'
New python executable in /home/cooper/repos/bandersnatch.dev/bin/python3
Not overwriting existing python script /home/cooper/repos/bandersnatch.dev/bin/python (you must use /home/cooper/repos/bandersnatch.dev/bin/python3) Installing setuptools, pkg_resources, pip, wheel...done.
Overwriting /home/cooper/repos/bandersnatch.dev/bin/activate.fish with new content
Overwriting /home/cooper/repos/bandersnatch.dev/bin/activate with new content
Overwriting /home/cooper/repos/bandersnatch.dev/bin/activate.csh with new content
Overwriting /home/cooper/repos/bandersnatch.dev/bin/python-config with new content
bin/pip install -r requirements.txt
bin/pip3 install -r requirements.txt

- I did have to hack the #! of bin/bandersnatch to hit python3 (Not sure why)