How to set BaseModel Field with the name "class"?

Question

I have the following JSON content:

"Device": {
        "description": "A Device is an instance of a device class and represents a physical device on an ODN.",
        "type": "object",
        "required": [
          "address",
          "name",
          "class"
        ],
        "properties": {
          "address": {
            "description": "The TALQ address of device.",
            "type": "string",
            "format": "uuid"
          },
          "name": {
            "description": "The name of device.",
            "type": "string"
          },
          "class": {
            "description": "The device class name.",
            "type": "string"
          },
          "functions": {
            "description": "The individual function models containing the data relating to this device. Each individual function must have a corresponding FunctionDesc at the DeviceClass referred by the 'class' property.",
            "type": "array",
            "items": {
              "$ref": "#/components/schemas/Function"
            }
          }
        }
      }

The generated pydantic data is the following:

class Device(BaseModel):
    address: UUID = Field(..., description='The TALQ address of device.')
    name: str = Field(..., description='The name of device.')
    class_: str = Field(..., alias='class', description='The device class name.')
    functions: Optional[List[Function1]] = Field(
        None,
        description="The individual function models containing the data relating to this device. Each individual function must have a corresponding FunctionDesc at the DeviceClass referred by the 'class' property.",
    )

As you can see, it changed class to class_ to avoid the conflict with the language class keyword.

But, when I try to construct the object Device I got error:

pydantic.error_wrappers.ValidationError: 1 validation error for Device
class
  field required (type=value_error.missing)

Here is how I construct the object:

Device(
        address=uuid.UUID(int=0),
        name=DEVICE_NAME,
        class_=DEVICE_CLASS_NAME,
        functions=get_function1_list()
    )