2nd debugging example

Try

./make_module_1.sh gridloop2

and experience that

python -c 'import ext_gridloop; print dir(ext_gridloop); \
           print ext_gridloop.__doc__'

ends with an exception

Traceback (most recent call last):
  File "<string>", line 1, in ?
SystemError: dynamic module not initialized properly

This signifies that the module misses initialization

Reason: no Py_InitModule3 call