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  #1  
Old 08-18-2014, 12:56 PM
armo armo is offline
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Join Date: Mar 2014
Posts: 21
DeprecationWarning when running a yield statement

Hello

I am working on this script where I run a task, wait for the user to give a mouse response and store the reaction time. Below is the task:

Code:
def example_trial():
    response = viz.Data()
    startTime = viz.tick()
    yield viztask.waitMouseDown( None, response )
    print 'response at: ', viz.tick() 
    reactionTime = response.time - startTime
    print reactionTime

but when it comes to the yield line it gives me this warning, and I can't figure out what it means and how to fix it

Code:
DeprecationWarning: "data" option will be removed in future versions, use "[data] = yield [condition]" instead
  yield viztask.waitMouseDown( None, response )
P.S. I have run the same code with a previous Vizard version and then I didn't get the warning
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  #2  
Old 08-18-2014, 02:58 PM
Jeff Jeff is offline
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Join Date: Aug 2008
Posts: 2,455
The viztask.waitMouseDown command has been updated and no longer expects the viz.Data object to be passed as an argument. Use the following instead:

Code:
def example_trial():
	startTime = viz.tick()
	response = yield viztask.waitMouseDown( None )
	print 'response at: ', viz.tick() 
	reactionTime = response.time - startTime
	print reactionTime
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  #3  
Old 08-19-2014, 11:23 AM
farshizzo farshizzo is offline
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Join Date: Mar 2003
Posts: 2,849
To be clear, this is just a warning. Your existing code should still function properly. Deprecated functions are not removed until the next major version, so you have until Vizard 6 to update your code.

If you would like to simply disable the warnings, then add the following code to the beginning of your script. However, I would strongly recommend that you just update your code.
Code:
import warnings
warnings.filterwarnings("ignore", category=DeprecationWarning)
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  #4  
Old 08-20-2014, 05:41 AM
armo armo is offline
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Join Date: Mar 2014
Posts: 21
Dear all

Thanks for the reply. There is no problem for me about updating my code but I would ask you if I can still use the "response.time" variable as it was written in the snippet above in order to calculate user's reaction time and the "response.button" in the snippet below to obtain the mouse button:

Code:
if response.button == viz.MOUSEBUTTON_LEFT:
    outResponse = "left response"
elif response.button == viz.MOUSEBUTTON_RIGHT:
    outResponse = "right response"

regards, armo
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  #5  
Old 08-20-2014, 10:35 AM
Jeff Jeff is offline
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Join Date: Aug 2008
Posts: 2,455
Yes, the data object returned by viztask.waitMouseDown still contains that information.
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