pytorch/torch/csrc/utils/python_tuples.h

#pragma once

#include "torch/csrc/python_headers.h"
#include "torch/csrc/Exceptions.h"
#include "torch/csrc/utils/object_ptr.h"
#include "torch/csrc/utils/python_numbers.h"

inline void THPUtils_packInt64Array(PyObject *tuple, size_t size, const int64_t *sizes) {
  for (size_t i = 0; i != size; ++i) {
    PyObject *i64 = THPUtils_packInt64(sizes[i]);
    if (!i64) {
      throw python_error();
    }
    PyTuple_SET_ITEM(tuple, i, i64);
  }
}

inline PyObject* THPUtils_packInt64Array(size_t size, const int64_t *sizes) {
  THPObjectPtr tuple(PyTuple_New(size));
  if (!tuple) throw python_error();
  THPUtils_packInt64Array(tuple.get(), size, sizes);
  return tuple.release();
}