Hi Agata,
I am not someone who codes in Python and am new to PsychoPy, so again please heed caution in taking any of my advice. But I think lists take strings, so imglist = ["image1.png", "image2.png"] should be an acceptable list to provide in the code snippet. Instead of referencing the excel file in the trials loop you would reference $imglist, I think. And then when you call the shuffle at the start of the routine, you’d shuffle(imglist).
If my thinking is correct, the below screenshots will create the image list at the start of the experiment, and then at the start of the routine (i.e., start of this trial) the image list will be shuffled. Then the image that is displayed will be the name that is in the first position of the variable imglist after shuffling, i.e. imglist[0]. Note that the code snippet happens before the image because it’s above the image in the order of the trial components.
