So I am trying to write a C function that accepts a numpy array object, extracts the data, does some manipulations and returns another c array as a numpy array object. Everything works seamlessly and I use python wrappers which help easy manipulation on the python side. However, I am facing a memory leak. I have an output pointer of doubles that I malloc-ed and which I wrap into a Python array object just before returning it to the calling python function, PyObject *arr; int nd = 2; npy_intp dims[] = {5, 10}; double *data = some_function_that_returns_a_double_star(x, y, z); arr = PyArray_SimpleNewFromData(nd, dims, NPY_DOUBLE, (void *)data); return arr; However, this creates a memory leak, because data is never freed and I did some googling to find that this is a problem in such applications and solution is non-trivial. The most helpful resource that I found on this is given here. I could not implement the destructor that this page talks about from the given example. Can someone help me with this? More concretely I am looking for something like, PyObject *arr; int nd = 2; npy_intp dims[] = {5, 10}; double *data = some_function_that_returns_a_double_star(x, y, z); arr = PyArray_SimpleNewFromData(nd, dims, NPY_DOUBLE, (void *)data); some_destructor_that_plug_memLeak_due_to_data_star(args); return arr; Numpy Array C APIs Numpy C APIs Continue reading...
