Hello, you will need to transition to Discovery soon as we will be decommissioning the old cluster in the next month or so. We have a Getting Started page here.
On Discovery, you can load Python 2.7.16 with the command:
module load python/2.7.16
Then, you can set up a virtual environment with a command like the following:
virtualenv </path/to/dir>/env
where you specify the directory path to install the environment in.