Hi everyone, Sorry for the double-post; I overlooked the new forum link in the old Google group page. I’m new to PsychoPy and Python, and I’ve been having an issue with filenames in Builder. Basically, I’ve been trying to create a simple visual search experiment. I’ve created a separate .py file…

OK, yes the error message made it clear. Look carefully at the last line, where it says the path it tried it has literally the value that you put in as the path (including an extra pair of quotes) rather than the variable you were trying to represent. That means it’s looking for a file literally ca…

Please edit your post to contain the full error message (you can copy with right-click from the pop-up window). That way, when someone searches for that error message they’ll more likely find you post. That said, the most common reason for PsychoPy not finding an image is that it actually ends with…

Sorry about forgetting the error message! I’ve edited the post to include the full message. When defining the string variable, I’ve included the .bmp extension, and when I print the stimulus list in the .py file, everything looks good. Here’s how I defined the strings in the .py file: target = c…

Thank you very much for your help! Adding the “$” works beautifully when I past all of my custom code directly into the Code Component (at Begin Routine). However, I have one more hurdle: I’m trying to have a portable, separate, custom “.py” file within the experiment directory, import that file i…

Update: I just caught that I forgot a return statement. However, returning the target string at the end of the function still results in the exact same NameError. -Steve

Hi Steve, We don’t know where that line comes from (is it your own code or something Builder generates?). Either at that point, target has not yet been defined, or the code is in your function and you would need to pass in target as a parameter to the function so that it knows about it.

Sorry about being unclear: that code was generated by Builder, with “target” being the name of the string variable from my code holding the target’s filename. After much trial and error, I just got it to work a few minutes ago: In the Code Component prior to each trial, under Begin Routine, I inser…

[image] SteveWalenchok: After much trial and error, I just got it to work a few minutes ago: In the Code Component prior to each trial, under Begin Routine, I inserted from setupVS import *. This is really a separate issue that needs a different topic (you’re no longer talking about strings a…

String variables for filenames in Builder?

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String variables for filenames in Builder?

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