Function PyObject_ToDouble

paddle/fluid/pybind/op_function_common.cc:241–261

}

double PyObject_ToDouble(PyObject* obj) {
  double res = 0.0;
  if (PyFloat_Check(obj) || PyLong_Check(obj) ||
      (PyObject_CheckTensor(obj) &&
       reinterpret_cast<TensorObject*>(obj)->tensor.numel() == 1)) {
    res = PyFloat_AsDouble(obj);
    return res;
  }
  auto type_name =
      std::string(reinterpret_cast<PyTypeObject*>(obj->ob_type)->tp_name);
  if (type_name.find("numpy") != std::string::npos &&
      type_name.find("numpy.complex") == std::string::npos) {
    auto num_obj = PyNumber_Float(obj);
    res = PyFloat_AsDouble(num_obj);
    Py_DECREF(num_obj);
  } else {
    PADDLE_THROW(
        common::errors::InvalidType("Cannot convert %s to double", type_name));
  }
  return res;
}

bool PyObject_CheckComplexOrToComplex(PyObject** obj) {
  if (PyComplex_Check(*obj) ||