our shared system currently has an old version of psychopy and would like to upgrade without breaking any old, stimuli.
based on the discussion
it seems possible to have multiple versions installed concurrently if they are installed in the different directories.
however, what I do not understand is the mechanism of switching between the versions. there must be some sort of configuration or environmental variable which would instruct which version to use…
when I write
from psychopy import core, event
how to control which libraries will be loaded?