Programming

Python

• PsychoPy
  • More issue with pyglet/avbin

Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "C:\UserHomes\PsychoPy2\lib\
site-packages\psychopy-1.74.01-py2.6.egg\psychopy\sound.py", line 48, in <module>
    import pyglet
  File "C:\UserHomes\PsychoPy2\lib\site-packages\pyglet\__init__.py", line 70, in <module>
    lib = ctypes.cdll.LoadLibrary('avbin')
  File "C:\UserHomes\PsychoPy2\lib\ctypes\__init__.py", line 431, in LoadLibrary
    return self._dlltype(name)
  File "C:\UserHomes\PsychoPy2\lib\ctypes\__init__.py", line 353, in __init__
    self._handle = _dlopen(self._name, mode)
WindowsError: [Error 998] Invalid access to memory location

• Problem in installing packages
  • "error: Unable to find vcvarsall.bat" when running

pip install cffi

But vcvarsall.bat exists on the system. This is because python 2.7 does not support MS Visual Studio ver > 8.0. To fix it: modifing the Lib\distutils\msvc9compiler.py can make it support vs 10.0 change 304 line

VERSION = get_build_version()

to

VERSION = 10.0

and add,

ld_args.append('/MANIFESTFILE:' + temp_manifest)
ld_args.append('/manifest')

Version Control

• introduction to version control