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-   -   DeprecationWarning when running a yield statement (https://forum.worldviz.com/showthread.php?t=5140)

armo 08-18-2014 12:56 PM

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

Jeff 08-18-2014 02:58 PM

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


farshizzo 08-19-2014 11:23 AM

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)


armo 08-20-2014 05:41 AM

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

Jeff 08-20-2014 10:35 AM

Yes, the data object returned by viztask.waitMouseDown still contains that information.


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