Function PandasObjectIsNull

python/pyarrow/src/arrow/python/helpers.cc:408–421

}

bool PandasObjectIsNull(PyObject* obj) {
  if (!MayHaveNaN(obj)) {
    return false;
  }
  if (obj == Py_None) {
    return true;
  }
  if (PyFloat_IsNaN(obj) || (pandas_NA && obj == pandas_NA) ||
      (pandas_NaTType && PyObject_TypeCheck(obj, pandas_NaTType)) ||
      (internal::PyDecimal_Check(obj) && internal::PyDecimal_ISNAN(obj))) {
    return true;
  }
  return false;
}

bool IsPandasTimedelta(PyObject* obj) {
  return pandas_Timedelta && PyObject_IsInstance(obj, pandas_Timedelta);