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[solved] All pygaze examples doesn't work for different reasons. UPDATE: Same underlying issue

edited September 2015 in PyGaze


This question relates my previous discussion "Pygaze example doesn't work."

I tested all four examples except for "show_webcam" in my MacPC (OS10.9.5) using Python2.7.10 and Eyelink1000plus.
All examples got different errors, so I couldn't have checked whether I use Pygaze.

"annoying_message" got a fatal Python error. "simple_experiment" had a error in "shooting_game" and "simple_tracker_experiment" had a same error in "".

Here are error messages below. What caused them?

◯ annoying_message
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/psychopy/monitors/ FutureWarning: comparison to None will result in an elementwise object comparison in the future.
if thisGrid==None \
2015-08-31 14:21:57.544 Python[17665:d07] ApplePersistenceIgnoreState: Existing state will not be touched. New state will be written to /var/folders/2m/tdn95x2s6ybbt4f56ks7k9q40000gn/T/org.python.python.savedState
2015-08-31 14:21:57.580 Python[17665:d07] invalid fullscreen drawable
Fatal Python error: (pygame parachute) Segmentation Fault

◯ simple_experiment

Traceback (most recent call last):
File "/Users/Desktop/PyGaze-master/examples/simple_experiment/", line 31, in
targetscreens['left'].draw_circle(pos=(constants.DISPSIZE[0]*0.25,constants.DISPSIZE[1]/2), fill=True)
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pygaze/", line 407, in draw_circle, colour, pos, r, pw)
TypeError: integer argument expected, got float

◯ shooting_game & simple_tracker_experiment

Traceback (most recent call last):
File "/Users/Desktop/PyGaze-master/examples/simple_tracker_experiment/", line 25, in
tracker = eyetracker.EyeTracker(disp)
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pygaze/", line 56, in init
from libeyelink import libeyelink
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pygaze/", line 38, in
custom_display = pylink.EyeLinkCustomDisplay
AttributeError: 'module' object has no attribute 'EyeLinkCustomDisplay'


  • rrrrrr
    edited 1:50PM


    I was able to fix my error.

    Please look at 'Pygaze example doesn't work' (

    I hope for your information.

  • edited September 2015

    Hi @rrr,

    Sorry for the late reply, I've been away for a bit. From the thread you link I understand that you've solved all the above issues? For future reference, I'm copying your solution from there into this thread:

    Thank you for your advise. I have good news. I succeeded to use Pygaze in Mac. I found that we should install the EyeLink Developer's Kit ( This will be installed in '/Application/'. We can chose the suitable version of pylink for our Python (e.g. pylink2.7) from '/Application/Eyelink/pylink/'. After the choice, we should copy it to the directory we usually use (in my case, opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7). Don't forget to rename it from 'pylink2.7' to 'pylink', and create the path between your Python and the directory includes pylink.

    Thanks for figuring this out!


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