I recently installed PsychoPy and was able to make it work on Windows under Spyder. I tested it with a simple GratingStim code (see below the simple code).
However, while the first time the grating stimulus appears correclty, the second time i run the same code the window opens but no grating display appears.
Does anyone have any idea of what is going on?
import sys sys.path.append("C:\Program Files (x86)\PsychoPy2\Lib\site-packages\PsychoPy-1.84.2-py2.7.egg") sys.path.append("C:\Program Files (x86)\PsychoPy2\Lib\site-packages") # NOTE: I had to include the code above otherwise Spyder would not recognize the PsychoPy module import psychopy.visual import psychopy.event win = psychopy.visual.Window( size=[400, 400], units="pix", fullscr=False ) grating = psychopy.visual.GratingStim( win=win, units="pix", size=[150, 150] ) grating.draw() win.flip() psychopy.event.waitKeys() win.close()