Displaying items in a SketchPad from a Python dictionary.
Hi Folks,
I'm creating a dictionary in python from which I plan to reference and retrieve stimuli for display.
Attached is a file with a minimum replication of what I'm doing and the error in question.
#
In my inline script:
I first create a list of of text stimuli, shuffle it, and then change that list into a tuple. I start with a list because shuffle doesn't work with a tuple (I've also tried using just a tuple foregoing the shuffle but get the same error described below).
I also create a dictionary with keys that match the tuple items.
I then use a sketch pad with the following:
[=Alpha_Stim_Contents.get(\[Alpha_Stim\[Alpha_Count\]\])]
but I keep getting this error: TypeError: unhashable type: 'list'
The code is supposed to display the item in the dictionary that matches the item number in 'Alpha_Stim'.
#
I've checked the type of object and it is reporting as a tuple. I've also run the code in a Python interpreter and it seems to work fine.
Any idea why I can't get this to work? I assume I'm overlooking something obvious or haven't converted Python code correctly to OpenSesame in the SketchPad.
Thanks as always for your time,
Boo.
Comments
I didn't escape backslashes when pasting the code above. It should look like this:
[=Alpha_Stim_Contents.get(\[Alpha_Stim\[Alpha_Count\]\])]
Thanks,
Boo.
Hi Folks,
Please excuse the bump.
Any ideas on this error?
Thanks,
Boo.
Hi Boo,
I can never remember how to write complex commands in a sketchpad. However, I adapted your script a bit (adding an inline_script before the sketchpad that selects the item of your dictionary). Is that good enough for you?
Eduard
Hi Eduard,
That's a much more preferable way of doing things actually. I shall KIC (Keep it Code!) from now on.
Thanks for your help!
Boo.
The hash() is a built-in python method, used to return a unique number . This can be applied to any user-defined object which won’t get changed once initialized. This property is used mainly in dictionary keys .
TypeError: unhashable type: 'list' usually means that you are trying to use a list as an hash argument. This means that when you try to hash an unhashable object it will result an error. For ex. when you use a list as a key in the dictionary , this cannot be done because lists can't be hashed. The standard way to solve this issue is to cast a list to a tuple .
http://net-informations.com/python/iq/unhashable.htm