[Pyrex] creating and populating Python/C structs

[Christopher Armstrong]

Hi all,

I'm trying to write a small function to create Python Frame objects
from Python code. I've been having problems getting everything
working. I can get pyrex to compile to C well enough, but gcc is
barfing on compiling the C. I've been reading through the available
documentation, but haven't found anything enlightening. It seems
dealing with Python/C API *objects* (as opposed to functions) isn't
something that's done often?

Basically, I'm doing a cdef extern from *: and then declaring the
PyFrameObject struct like so:

    # Just defining the members that we need to manipulate
    struct _frame:
        _frame *f_back
        PyCodeObject *f_code
        PyObject *f_builtins
        PyObject *f_globals
        PyObject *f_locals
        PyObject *f_exc_type, *f_exc_value, *f_exc_traceback
        int f_lineno
    ctypedef _frame PyFrameObject

later, in a newframe function, I'm doing this to create the new frame object:

    cdef PyFrameObject *frame

When I try to compile the resulting C code, I get the following error:

_tbconstruct.c: In function `__pyx_f_12_tbconstruct_newframe':
_tbconstruct.c:57: error: `__pyx_v_frame' undeclared (first use in
this function)


I've attached the code (it's very short). I'm compiling it with 
    pyrexc _tbconstruct.pyx; gcc -c -fPIC -I/usr/include/python2.4
_tbconstruct.c


Thanks for any help.
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