My Experience: I seek to present images of animals, objects, and people to participants to rate valence and arousal on scales of 1-9.
Constraints: I would like a maximum of 3 items of the same category (e.g., 3 animals) to be presented successively. For this, I wrote a pseudorandomization code that I placed in the “BeginRoutine” section.
The problem: This code worked fine on the 2020 version of PsychoPy but since I upgraded to a newer version (2021 or 2022) the experiment no longer launches (a frozen black screen appears) and the problem obviously comes from there (everything is OK when I remove this code). I want to keep the 2022 version, if possible, for the advantages it has in terms of Sliders.
The code used: (sorry for the lack of indentation there)
import random
import pandas as pd
trials=data.importConditions(“ImagesPalAd.xlsx”)
conditionMet = False
while conditionMet == False:
np.random.shuffle(trials)
conditions =
for row in range(len(trials)):
conditions.append(trials[row][“stimuliCondition”]) #Name of the conditions type column
for row in range(len(trials) - 2):
if trials[row][“stimuliCondition”] == trials[row + 1][“stimuliCondition”] and trials[row+1][“stimuliCondition”] == trials[row + 2][“stimuliCondition”]:
conditionMet = False
break
else:
conditionMet = True
df = pd.DataFrame.from_dict(trials)
df.to_excel(‘trials.xlsx’)