example with fortran to python callback function fails with as of f90wrap v0.2.13: "bad argument to internal function"

[jmp75]

I had set up an example for setting up a callback function (#93). This resulted in a an example under examples/callback_print_function_issue93 . I am trying to re-run this example with f90wrap v0.2.13 and if fails to work as expected.

---------------------------------------------------------------------------
SystemError                               Traceback (most recent call last)
Cell In[9], line 1
----> 1 CBF.caller.test_write_msg()

File ~/src/f90wrap/examples/callback_print_function_issue93/CBF.py:53, in Caller.test_write_msg()
     43 @staticmethod
     44 def test_write_msg():
     45     """
     46     test_write_msg()
     47     
   (...)
     51     
     52     """
---> 53     _CBF.f90wrap_test_write_msg()

SystemError: /home/conda/feedstock_root/build_artifacts/python-split_1669131725489/work/Objects/tupleobject.c:159: bad argument to internal function

It might be related to #195, but not at all sure this is a single bug.

[jmp75]

This is probably happening at this line 159 of tupleobject.c in cypthon 3.9

Also, I can reproduce this issue with f90wrap 0.2.5 on python 3.9. My example was contributed such that it would have worked with f90wrap 0.2.2 (not sure which version of cpython though)