Randomly Select from Multiple Conditions files

[dvbridges]

Hi @danta, it would help us to read the code if you surround your code with backticks.

Please surround python code with backticks

When you include python code on this forum please put triple “backticks” like this ``` on the line before and the line after your code. If you’ve done it correctly then your code will appear in a grey box with correct indentation like this (check the preview of your post on the right hand side before posting it) and other people will be better able to work out what might be right/wrong with your code. if myVal==True: break If you’ve already posted something that didn’t follow this rule th…

I think a neater option would be to use Pandas to create your new condition file at the beginning of the experiment, and load it into trial handler in Builder for randomisation. In a code component, in the “Begin Experiment” tab:

import pandas as pd

fileName = ['neutral.csv', 'threat1.csv', 'threat2.csv']
conditionFile = pd.DataFrame(columns=['stim'])  # where 'stim' is the column name for your images

for files in fileName:
    myDat = pd.read_csv(files)  # Get conditions file 
    myDat = myDat.sample(frac=1).reset_index(drop=True)  # Shuffle the dataframe
    myDat = myDat.head(20)  # Take first 20 rows from sheet
    conditionFile = conditionFrame.append(myDat)  # Append to new conditions file variable

conditionFile.to_csv("myStim.csv")  # Save to new csv file for use in the loop handler.