It's been asked a couple of times on the PsychoPy forums whether it's possible to run PsychoPy experiments directly from a USB stick using Windows. Below are are steps that should work in order to ...

This should work out of the box if have PsychoPy (using Python2, tested using Psychopy v.3.0.3) installed. You might need to tweak the display parameters to make everything look nice on your own ...