[solved] Randomly present 2 stimuli from 2 lists
I am attempting to build an experiment where I will present two picture stimuli at once side by side (either on a sketchpad or as image buttons) in a random order and on random sides of the screen. One of the stimuli will be a 'real' while the other will be a 'foil'. Participants merely have to select one of the two stim.
Randomizing presentation on different sides of the screen for 'real' and 'foil' should be easily taken care of by a loop's built in randomization function (just divide trials in half for different sides). The real trick is determining how to draw from the file pool a random image that 1) has not been displayed before, and 2) is from a specified sub-pool (i.e., real or foil). Real and foil picture stim are matched, so there is an even amount.
I'm sure this is doable with some python coding, but it appears to be a bit beyond my coding prowess. Any help you can offer directing me in the right direction would be greatly appreciated!