Pylink modules missing from installation?

[Jit Wei, Aaron Ang]

I am aware that pylink supposedly comes along with the psychopy installation. While I am able to import the pylink module, I am still get the following errors which state that the functions for the pylink module are missing. I tried reinstalling psychopy but it doesn't fix the problem. Am I missing out something here?

######### Running: /home/perception/Desktop/Pylink Examples/simple.py ##########
Traceback (most recent call last):
  File "/home/perception/Desktop/Pylink Examples/simple.py", line 239, in <module>
    eyelinktracker = pylink.EyeLink()
AttributeError: 'module' object has no attribute 'EyeLink'
()

######### Running: /home/perception/Desktop/Pylink Examples/simple.py ##########
Traceback (most recent call last):
  File "/home/perception/Desktop/Pylink Examples/simple.py", line 244, in <module>
    pylink.openGraphics((SCREENWIDTH, SCREENHEIGHT),32)
AttributeError: 'module' object has no attribute 'openGraphics'
()

######### Running: /home/perception/Desktop/Pylink Examples/simple.py ##########
Traceback (most recent call last):
  File "/home/perception/Desktop/Pylink Examples/simple.py", line 248, in <module>
    getEYELINK().openDataFile(edfFileName)       
NameError: name 'getEYELINK' is not defined
()

######### Running: /home/perception/Desktop/Pylink Examples/simple.py ##########
Traceback (most recent call last):
  File "/home/perception/Desktop/Pylink Examples/simple.py", line 251, in <module>
    pylink.flushGetkeyQueue()
AttributeError: 'module' object has no attribute 'flushGetkeyQueue'
()

######### Running: /home/perception/Desktop/Pylink Examples/simple.py ##########
Traceback (most recent call last):
  File "/home/perception/Desktop/Pylink Examples/simple.py", line 252, in <module>
    getEYELINK().setOfflineMode()                         
NameError: name 'getEYELINK' is not defined
()

[Jonathan Peirce]

What computer system was this?

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[Egor Ananyev]

I get the same issue on Mac OS 10.9.5, PsychoPy Version 1.82.01.

Running the code:

from pylink import *
edfFileName = 'test.edf'
getEYELINK().openDataFile(edfFileName)

Yields the following error:

  File "/Users/egor/Dropbox/Projects/mc/mc/mcbsf.py", line 65, in <module>
    getEYELINK().openDataFile(edfFileName)
AttributeError: 'NoneType' object has no attribute 'openDataFile'

The following is the output of dir(getEYELINK()):

['__class__', '__delattr__', '__doc__', '__format__', '__getattribute__', '__hash__', '__init__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__']

Thanks!
--Egor

[Egor Ananyev]

When I tried to replace the module in the standalone version of PsychoPy (pylink date modified 2012) with the version provided by EyeLink (pylink date modified 2014), I got the following error:

Traceback (most recent call last):

  File "/Users/egor/Dropbox/Projects/mc/mc/mcbsf.py", line 30, in <module>
    from pylink import *
  File "pylinktogo/pylink2.7/lib/python2.7/site-packages/pylink/__init__.py", line 57, in <module>
   
ImportError: dlopen(/Applications/PsychoPy2.app/Contents/Resources/lib/python2.7/pylink/pylink.so, 2): Symbol not found: _send_data_file
  Referenced from: /Applications/PsychoPy2.app/Contents/Resources/lib/python2.7/pylink/pylink.so
  Expected in: /Applications/PsychoPy2.app/Contents/MacOS/../Frameworks/eyelink_core.framework/Versions/A/eyelink_core
 in /Applications/PsychoPy2.app/Contents/Resources/lib/python2.7/pylink/pylink.so

[Egor Ananyev]

I came across a solution in the second answer to this question: http://stackoverflow.com/questions/35071433/psychopy-and-pylink-example

Apparently, the call needs to be modified to:

el = pl.EyeLink()

el.openDataFile('Test.EDF')

Not sure why this is the case, but it works.

Best,
--Egor

[Jon Peirce]

Probably pylink/eyelink has changed its library call. Glad you got it
fixed.

By the way we're now over on http://discourse.psychopy.org and this
google group is now going to be increasingly ignored

Jon

On 12/08/2016 10:39, Egor Ananyev wrote:
>
> Not sure why this is the case, but it works.

--
Jon Peirce
http://www.peirce.org.uk