Method construct

src/anthropic/_models.py:221–278

(  # pyright: ignore[reportIncompatibleMethodOverride]
        __cls: Type[ModelT],
        _fields_set: set[str] | None = None,
        **values: object,
    )

    @classmethod
    @override
    def construct(  # pyright: ignore[reportIncompatibleMethodOverride]
        __cls: Type[ModelT],
        _fields_set: set[str] | None = None,
        **values: object,
    ) -> ModelT:
        m = __cls.__new__(__cls)
        fields_values: dict[str, object] = {}

        config = get_model_config(__cls)
        populate_by_name = (
            config.allow_population_by_field_name
            if isinstance(config, _ConfigProtocol)
            else config.get("populate_by_name")
        )

        if _fields_set is None:
            _fields_set = set()

        model_fields = get_model_fields(__cls)
        for name, field in model_fields.items():
            key = field.alias
            if key is None or (key not in values and populate_by_name):
                key = name

            if key in values:
                fields_values[name] = _construct_field(value=values[key], field=field, key=key)
                _fields_set.add(name)
            else:
                fields_values[name] = field_get_default(field)

        extra_field_type = _get_extra_fields_type(__cls)

        _extra = {}
        for key, value in values.items():
            if key not in model_fields:
                parsed = construct_type(value=value, type_=extra_field_type) if extra_field_type is not None else value

                if PYDANTIC_V1:
                    _fields_set.add(key)
                    fields_values[key] = parsed
                else:
                    _extra[key] = parsed

        object.__setattr__(m, "__dict__", fields_values)

        if PYDANTIC_V1:
            # init_private_attributes() does not exist in v2
            m._init_private_attributes()  # type: ignore

            # copied from Pydantic v1's `construct()` method
            object.__setattr__(m, "__fields_set__", _fields_set)
        else:
            # these properties are copied from Pydantic's `model_construct()` method
            object.__setattr__(m, "__pydantic_private__", None)
            object.__setattr__(m, "__pydantic_extra__", _extra)
            object.__setattr__(m, "__pydantic_fields_set__", _fields_set)

        return m