Simple rectangle experiment error

Coding
1

Dear experts,

I am new to coding and I am trying to adapt an existing script for a very simple experiment in which the aim is that a rectangle with different colours and dimensions loops through the screen.
stimuli.csv (43 Bytes)
rect_exp_code.py (855 Bytes)

However, I get the following error:

“File “C:\Users\USER\OneDrive\Área de Trabalho\psychopy\new_coding\untitled.py”, line 11, in

size = float(row[0]) # the first element in the row converted to a floating point number

ValueError: could not convert string to float: ‘3’

Experiment ended.

I attach the script and the excel files (which contains the rectangle dimensions and colours). I have tried several options including changing the dimensions in the excel files without decimals but the error message held.

Can anyone help in this regard?

Much appreciated

Jose

2

That’s the Byte Order Mark being picked up, it sits at the beginning of a file and is used to determine the file encoding. Try changing the call to open to:

datafile = open("stimuli.csv", newline='', encoding='utf-8-sig')
3

Thank you for your help it worked

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