in src/anthropic/_legacy_response.py [0:0]
def _parse(self, *, to: type[_T] | None = None) -> R | _T:
cast_to = to if to is not None else self._cast_to
# unwrap `TypeAlias('Name', T)` -> `T`
if is_type_alias_type(cast_to):
cast_to = cast_to.__value__ # type: ignore[unreachable]
# unwrap `Annotated[T, ...]` -> `T`
if cast_to and is_annotated_type(cast_to):
cast_to = extract_type_arg(cast_to, 0)
origin = get_origin(cast_to) or cast_to
if inspect.isclass(origin):
if issubclass(cast(Any, origin), JSONLDecoder):
return cast(
R,
cast("type[JSONLDecoder[Any]]", cast_to)(
raw_iterator=self.http_response.iter_bytes(chunk_size=64),
line_type=extract_type_arg(cast_to, 0),
http_response=self.http_response,
),
)
if issubclass(cast(Any, origin), AsyncJSONLDecoder):
return cast(
R,
cast("type[AsyncJSONLDecoder[Any]]", cast_to)(
raw_iterator=self.http_response.aiter_bytes(chunk_size=64),
line_type=extract_type_arg(cast_to, 0),
http_response=self.http_response,
),
)
if self._stream:
if to:
if not is_stream_class_type(to):
raise TypeError(f"Expected custom parse type to be a subclass of {Stream} or {AsyncStream}")
return cast(
_T,
to(
cast_to=extract_stream_chunk_type(
to,
failure_message="Expected custom stream type to be passed with a type argument, e.g. Stream[ChunkType]",
),
response=self.http_response,
client=cast(Any, self._client),
),
)
if self._stream_cls:
return cast(
R,
self._stream_cls(
cast_to=extract_stream_chunk_type(self._stream_cls),
response=self.http_response,
client=cast(Any, self._client),
),
)
stream_cls = cast("type[Stream[Any]] | type[AsyncStream[Any]] | None", self._client._default_stream_cls)
if stream_cls is None:
raise MissingStreamClassError()
return cast(
R,
stream_cls(
cast_to=cast_to,
response=self.http_response,
client=cast(Any, self._client),
),
)
if cast_to is NoneType:
return cast(R, None)
response = self.http_response
if cast_to == str:
return cast(R, response.text)
if cast_to == int:
return cast(R, int(response.text))
if cast_to == float:
return cast(R, float(response.text))
if cast_to == bool:
return cast(R, response.text.lower() == "true")
if inspect.isclass(origin) and issubclass(origin, HttpxBinaryResponseContent):
return cast(R, cast_to(response)) # type: ignore
if origin == LegacyAPIResponse:
raise RuntimeError("Unexpected state - cast_to is `APIResponse`")
if inspect.isclass(
origin # pyright: ignore[reportUnknownArgumentType]
) and issubclass(origin, httpx.Response):
# Because of the invariance of our ResponseT TypeVar, users can subclass httpx.Response
# and pass that class to our request functions. We cannot change the variance to be either
# covariant or contravariant as that makes our usage of ResponseT illegal. We could construct
# the response class ourselves but that is something that should be supported directly in httpx
# as it would be easy to incorrectly construct the Response object due to the multitude of arguments.
if cast_to != httpx.Response:
raise ValueError(f"Subclasses of httpx.Response cannot be passed to `cast_to`")
return cast(R, response)
if (
inspect.isclass(
origin # pyright: ignore[reportUnknownArgumentType]
)
and not issubclass(origin, BaseModel)
and issubclass(origin, pydantic.BaseModel)
):
raise TypeError("Pydantic models must subclass our base model type, e.g. `from anthropic import BaseModel`")
if (
cast_to is not object
and not origin is list
and not origin is dict
and not origin is Union
and not issubclass(origin, BaseModel)
):
raise RuntimeError(
f"Unsupported type, expected {cast_to} to be a subclass of {BaseModel}, {dict}, {list}, {Union}, {NoneType}, {str} or {httpx.Response}."
)
# split is required to handle cases where additional information is included
# in the response, e.g. application/json; charset=utf-8
content_type, *_ = response.headers.get("content-type", "*").split(";")
if not content_type.endswith("json"):
if is_basemodel(cast_to):
try:
data = response.json()
except Exception as exc:
log.debug("Could not read JSON from response data due to %s - %s", type(exc), exc)
else:
return self._client._process_response_data(
data=data,
cast_to=cast_to, # type: ignore
response=response,
)
if self._client._strict_response_validation:
raise APIResponseValidationError(
response=response,
message=f"Expected Content-Type response header to be `application/json` but received `{content_type}` instead.",
body=response.text,
)
# If the API responds with content that isn't JSON then we just return
# the (decoded) text without performing any parsing so that you can still
# handle the response however you need to.
return response.text # type: ignore
data = response.json()
return self._client._process_response_data(
data=data,
cast_to=cast_to, # type: ignore
response=response,
)