how can i embed python in c?

Question

i wrote the C code as follow:

int main(int argc, char** argv)

{

    PyObject *mod, *name, *func;
    Py_Initialize();
    mod = PyImport_ImportModule("perf_tester");
    if(!mod)
    {
        printf("cannot find perf_tester.py");
        getchar();
        return -1;
    }
    name = PyObject_GetAttrString(mod, "CheckSharpness");
    if(!name)
    {
        printf("can not find CheckSharpness");
        getchar();
        return -1;
    }
    func = PyObject_GetAttrString(name,"F");
    if(!func)
    {
        printf("can not find function");
        getchar();
        return -1;
    }
    Py_Finalize();
    system("pause");
    return 0;
}

except for func, i could find mod and name.

and the partial of the perf_tester.py as follow:

def CheckSharpness(sample, edges, min_pass_mtf, min_pass_lowest_mtf,
           use_50p, mtf_sample_count, mtf_patch_width,
           mtf_crop_ratio=_MTF_DEFAULT_CROP_RATIO,
           n_thread=1):

  mtfs = [mtf_calculator.Compute(sample, line_start[t], line_end[t],
                                   mtf_patch_width, mtf_crop_ratio,
                                   use_50p)[0] for t in perm]

  F = open("data.txt","w")
  F.write(str(mtfs))
  F.close()

what could I do?

You should call PyErr_PrintEx(0) whenever a Python C API function fails. Also, don't tag C question as c++, please. — Fred Foo
– Fred Foo, Commented May 8, 2014 at 9:35

Angew is no longer proud of SO · Accepted Answer · 2014-05-08 09:34:41Z

1

F is a local variable, it's not a member of CheckSharpness. It does not exist when CheckSharpness is not currently running, and each invocation of CheckSharpness has its own copy. There's no way to access this from outside.

answered May 8, 2014 at 9:34

Angew is no longer proud of SO

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