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Questions tagged [psychopy]

PsychoPy is an open-source python module written in python and c libraries for the generation of experiments for neuroscience and experimental psychology. PsychoPy includes Builder and Coder - two graphical interfaces to build experiments using the psychopy python module.

PsychoPy is an open-source Python module written in Python and C libraries for the generation of experiments for neuroscience and experimental psychology. PsychoPy includes Builder and Coder - two graphical interfaces to build experiments using the PsychoPy Python module.

Links:

See the project website for documentation and more information about PsychoPy.

All support now takes place in the psychopy forum

See Github for psychopy's source code. Contributions are very welcome!

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python/psychopy: for loop to split image names

I have a list of images and I want to split their names at the '=' symbol. e.g. from: 'set_one-C:\Users\Documents\stim\01=aa.png' to 'aa.png' I have tried to create a 'for loop' to run through each item in the list and split the names in turn.…
Steve
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ValueError: need more than 1 value to unpack psychopy: haven't touched the script since it was working yesterday and am suddenly getting this error

I recognize there are a decent amount of ValueError questions on here, but it seems none are specifically related to psychopy or my issue. I am coding an experiment from scratch on psychopy (no builder involved). Yesterday, my script was running…
boxcar44
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What python distribution should I download for PsychoPy so that I won't run into version errors?

It's been a painful weekend of learning how picky PsychoPy is...It only likes 32-bit Python above 2.5 and below 3, and many of the scripts have to be specific versions as well. That said, I am currently using the distribution provided here (Option…
Steve Beukema
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Can't access elements from an image array using python/psychopy/numpy

Using Python/Psychopy/numpy I have created an array containing 6 different sets of images. I am trying to display an image by accessing elements of the array. It is my understanding that [0][0] (I have also tried [0,0]) will access the first image…
Steve
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Error in Python with for loop being out of range

I am writing a program in PsychoPy (a software meant for psychology experiments using Python) and keep getting a 'list index out of range' error. The problem appears on the line that says "if already_used_values[a] == value:". The only possible…
Joe Rogers
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Is there a python code for tracking all keypresses (getting timeline for each keypress)?

I am using OpenSesame (which runs on Python) for creating an experiment. I need a code for getting a timeline for each keypress (1, 2, 3, 4, space). For example, key 1 pressed at 12223ms, key 3 at 15452ms, key 1 again at 19112ms. Here, I need to…
Adarsh
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Using python code to set stimuli to certain locations from excel conditions file

I am a final year undergraduate doing my dissertation. I am replicating Reagh's (2016) Mnemonic Similarity Task and am struggling with coding for the Spatial Task. What I want to achieve is all stimuli coded '5' in my excel file to appear on the…
Carys Deeble
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How can I code a moving circle according to gravitational acceleration?

New programmer here - Used PsychoPy to generate a circle moving across the screen. Super basic, but I want to simulate different realistic acceleration profiles. Basically I want one of the profiles to be the circle moving at the acceleration of…
Steve Beukema
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How to open my favorite editor from PsychoPy Builder

I'm using PsychoPy Builder. I'd like to write codes with vim. How should I open it from PsychoPy Builder? Sorry about my poor English.
hrsma2i
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psychopy website does not give a fix for output file doubeling data

Here is some of the code... Whenever I get an output file I get a doubling of data. #For each record in keypress, a line is created in the file keyPress = [] …
Annette
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Understanding the random function in Python coding

I would appreciate it if someone can help me understand the random function in Python? nLines=500 xys = random([nLines,2])*500-250 oris = random(nLines)*180 In the example here, the values of the oris will be between 0-180. (based on what the…
Cashel Godfrey
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