[Py2exe-users] ctypes.pythonapi fails

[Okko W. <okk...@gm...>]

Hello,

I run in to problems converting a PyQt4/matplotlib application in to a
single executable.

matplotlib does the following;

_decref = ctypes.pythonapi.Py_DecRef

ctypes help; "pythonapi is a predefined symbol giving access to the Python
C api:"

Apparently py2exe loads ctypes such that ctypes.pythonapi is not valid,
since my application fails with;

  File "zipextimporter.pyc", line 82, in load_module
  File "matplotlib\backends\backend_qt5agg.pyc", line 31, in <module>
  File "ctypes\__init__.pyc", line 375, in __getattr__
  File "ctypes\__init__.pyc", line 380, in __getitem__
AttributeError: function 'Py_DecRef' not found

I can override ctypes.pythonapi before importing matplotlib as follows;

ctypes.pythonapi = ctypes.PyDLL('python%d%d.dll' % sys.version_info[:2])

With above override things work, however plain wrong since the application
now has 2 interpreters (read python dll's);
one loaded by py2exe and one by the override.

If I could get a handle to the interpreter loaded by py2exe I could do;

ctypes.pythonapi = ctypes.PyDLL(handle_to_py2exe_interpreter)


How to fix ctypes.pythonapi?


Thanks,

Okko Willeboordse