There is a bit of a trick you can do to randomise two things separately in the same loop - it’s easier to show than tell, so here is an example experiment I just made which does it as simply as possible:
indrand.psyexp (11.2 KB)
strings.csv (41 Bytes)
Essentially, you create a loop with the number of repetitions you want, and make each row of the corresponding csv file a list of all the possible values, separated by a delimiter (here I use a comma). The first thing you’ll need to do is import random.numpy.choice so you have access to this function. You can do this using a Code component, with this in the Begin Experiment tab:
from numpy.random import choice as rndchoice
Using a Variable component, you can create a variable (I called mine txt1 and txt2) with the value set to be rndchoice(COLUMN NAME.split("DELIMITER")). So, essentially, you’re saying “Take the value of this column, split it at every delimiter (a comma, in my example) so that it’s a list of strings, then choose one item at random from this list”.
Then you can just use this variable (preface it with a $ so that Psychopy knows to interpret it as a variable name) in your stimuli.