"""Azure OpenAI chat wrapper."""
from __future__ import annotations
import logging
import os
from typing import (
Any,
Awaitable,
Callable,
Dict,
List,
Optional,
Type,
TypedDict,
TypeVar,
Union,
)
import openai
from langchain_core.language_models import LanguageModelInput
from langchain_core.language_models.chat_models import LangSmithParams
from langchain_core.messages import BaseMessage
from langchain_core.outputs import ChatResult
from langchain_core.runnables import Runnable
from langchain_core.utils import from_env, secret_from_env
from langchain_core.utils.pydantic import is_basemodel_subclass
from pydantic import BaseModel, Field, SecretStr, model_validator
from typing_extensions import Literal, Self
from langchain_openai.chat_models.base import BaseChatOpenAI
logger = logging.getLogger(__name__)
_BM = TypeVar("_BM", bound=BaseModel)
_DictOrPydanticClass = Union[Dict[str, Any], Type[_BM]]
_DictOrPydantic = Union[Dict, _BM]
class _AllReturnType(TypedDict):
raw: BaseMessage
parsed: Optional[_DictOrPydantic]
parsing_error: Optional[BaseException]
def _is_pydantic_class(obj: Any) -> bool:
return isinstance(obj, type) and is_basemodel_subclass(obj)
[docs]
class AzureChatOpenAI(BaseChatOpenAI):
"""Azure OpenAI chat model integration.
Setup:
Head to the https://learn.microsoft.com/en-us/azure/ai-services/openai/chatgpt-quickstart?tabs=command-line%2Cpython-new&pivots=programming-language-python
to create your Azure OpenAI deployment.
Then install ``langchain-openai`` and set environment variables
``AZURE_OPENAI_API_KEY`` and ``AZURE_OPENAI_ENDPOINT``:
.. code-block:: bash
pip install -U langchain-openai
export AZURE_OPENAI_API_KEY="your-api-key"
export AZURE_OPENAI_ENDPOINT="https://your-endpoint.openai.azure.com/"
Key init args — completion params:
azure_deployment: str
Name of Azure OpenAI deployment to use.
temperature: float
Sampling temperature.
max_tokens: Optional[int]
Max number of tokens to generate.
logprobs: Optional[bool]
Whether to return logprobs.
Key init args — client params:
api_version: str
Azure OpenAI API version to use. See more on the different versions here:
https://learn.microsoft.com/en-us/azure/ai-services/openai/reference#rest-api-versioning
timeout: Union[float, Tuple[float, float], Any, None]
Timeout for requests.
max_retries: Optional[int]
Max number of retries.
organization: Optional[str]
OpenAI organization ID. If not passed in will be read from env
var OPENAI_ORG_ID.
model: Optional[str]
The name of the underlying OpenAI model. Used for tracing and token
counting. Does not affect completion. E.g. "gpt-4", "gpt-35-turbo", etc.
model_version: Optional[str]
The version of the underlying OpenAI model. Used for tracing and token
counting. Does not affect completion. E.g., "0125", "0125-preview", etc.
See full list of supported init args and their descriptions in the params section.
Instantiate:
.. code-block:: python
from langchain_openai import AzureChatOpenAI
llm = AzureChatOpenAI(
azure_deployment="your-deployment",
api_version="2024-05-01-preview",
temperature=0,
max_tokens=None,
timeout=None,
max_retries=2,
# organization="...",
# model="gpt-35-turbo",
# model_version="0125",
# other params...
)
**NOTE**: Any param which is not explicitly supported will be passed directly to the
``openai.AzureOpenAI.chat.completions.create(...)`` API every time to the model is
invoked. For example:
.. code-block:: python
from langchain_openai import AzureChatOpenAI
import openai
AzureChatOpenAI(..., logprobs=True).invoke(...)
# results in underlying API call of:
openai.AzureOpenAI(..).chat.completions.create(..., logprobs=True)
# which is also equivalent to:
AzureChatOpenAI(...).invoke(..., logprobs=True)
Invoke:
.. code-block:: python
messages = [
(
"system",
"You are a helpful translator. Translate the user sentence to French.",
),
("human", "I love programming."),
]
llm.invoke(messages)
.. code-block:: python
AIMessage(
content="J'adore programmer.",
usage_metadata={"input_tokens": 28, "output_tokens": 6, "total_tokens": 34},
response_metadata={
"token_usage": {
"completion_tokens": 6,
"prompt_tokens": 28,
"total_tokens": 34,
},
"model_name": "gpt-4",
"system_fingerprint": "fp_7ec89fabc6",
"prompt_filter_results": [
{
"prompt_index": 0,
"content_filter_results": {
"hate": {"filtered": False, "severity": "safe"},
"self_harm": {"filtered": False, "severity": "safe"},
"sexual": {"filtered": False, "severity": "safe"},
"violence": {"filtered": False, "severity": "safe"},
},
}
],
"finish_reason": "stop",
"logprobs": None,
"content_filter_results": {
"hate": {"filtered": False, "severity": "safe"},
"self_harm": {"filtered": False, "severity": "safe"},
"sexual": {"filtered": False, "severity": "safe"},
"violence": {"filtered": False, "severity": "safe"},
},
},
id="run-6d7a5282-0de0-4f27-9cc0-82a9db9a3ce9-0",
)
Stream:
.. code-block:: python
for chunk in llm.stream(messages):
print(chunk)
.. code-block:: python
AIMessageChunk(content="", id="run-a6f294d3-0700-4f6a-abc2-c6ef1178c37f")
AIMessageChunk(content="J", id="run-a6f294d3-0700-4f6a-abc2-c6ef1178c37f")
AIMessageChunk(content="'", id="run-a6f294d3-0700-4f6a-abc2-c6ef1178c37f")
AIMessageChunk(content="ad", id="run-a6f294d3-0700-4f6a-abc2-c6ef1178c37f")
AIMessageChunk(content="ore", id="run-a6f294d3-0700-4f6a-abc2-c6ef1178c37f")
AIMessageChunk(content=" la", id="run-a6f294d3-0700-4f6a-abc2-c6ef1178c37f")
AIMessageChunk(content=" programm", id="run-a6f294d3-0700-4f6a-abc2-c6ef1178c37f")
AIMessageChunk(content="ation", id="run-a6f294d3-0700-4f6a-abc2-c6ef1178c37f")
AIMessageChunk(content=".", id="run-a6f294d3-0700-4f6a-abc2-c6ef1178c37f")
AIMessageChunk(
content="",
response_metadata={
"finish_reason": "stop",
"model_name": "gpt-4",
"system_fingerprint": "fp_811936bd4f",
},
id="run-a6f294d3-0700-4f6a-abc2-c6ef1178c37f",
)
.. code-block:: python
stream = llm.stream(messages)
full = next(stream)
for chunk in stream:
full += chunk
full
.. code-block:: python
AIMessageChunk(
content="J'adore la programmation.",
response_metadata={
"finish_reason": "stop",
"model_name": "gpt-4",
"system_fingerprint": "fp_811936bd4f",
},
id="run-ba60e41c-9258-44b8-8f3a-2f10599643b3",
)
Async:
.. code-block:: python
await llm.ainvoke(messages)
# stream:
# async for chunk in (await llm.astream(messages))
# batch:
# await llm.abatch([messages])
Tool calling:
.. code-block:: python
from pydantic import BaseModel, Field
class GetWeather(BaseModel):
'''Get the current weather in a given location'''
location: str = Field(
..., description="The city and state, e.g. San Francisco, CA"
)
class GetPopulation(BaseModel):
'''Get the current population in a given location'''
location: str = Field(
..., description="The city and state, e.g. San Francisco, CA"
)
llm_with_tools = llm.bind_tools([GetWeather, GetPopulation])
ai_msg = llm_with_tools.invoke(
"Which city is hotter today and which is bigger: LA or NY?"
)
ai_msg.tool_calls
.. code-block:: python
[
{
"name": "GetWeather",
"args": {"location": "Los Angeles, CA"},
"id": "call_6XswGD5Pqk8Tt5atYr7tfenU",
},
{
"name": "GetWeather",
"args": {"location": "New York, NY"},
"id": "call_ZVL15vA8Y7kXqOy3dtmQgeCi",
},
{
"name": "GetPopulation",
"args": {"location": "Los Angeles, CA"},
"id": "call_49CFW8zqC9W7mh7hbMLSIrXw",
},
{
"name": "GetPopulation",
"args": {"location": "New York, NY"},
"id": "call_6ghfKxV264jEfe1mRIkS3PE7",
},
]
Structured output:
.. code-block:: python
from typing import Optional
from pydantic import BaseModel, Field
class Joke(BaseModel):
'''Joke to tell user.'''
setup: str = Field(description="The setup of the joke")
punchline: str = Field(description="The punchline to the joke")
rating: Optional[int] = Field(description="How funny the joke is, from 1 to 10")
structured_llm = llm.with_structured_output(Joke)
structured_llm.invoke("Tell me a joke about cats")
.. code-block:: python
Joke(
setup="Why was the cat sitting on the computer?",
punchline="To keep an eye on the mouse!",
rating=None,
)
See ``AzureChatOpenAI.with_structured_output()`` for more.
JSON mode:
.. code-block:: python
json_llm = llm.bind(response_format={"type": "json_object"})
ai_msg = json_llm.invoke(
"Return a JSON object with key 'random_ints' and a value of 10 random ints in [0-99]"
)
ai_msg.content
.. code-block:: python
'\\n{\\n "random_ints": [23, 87, 45, 12, 78, 34, 56, 90, 11, 67]\\n}'
Image input:
.. code-block:: python
import base64
import httpx
from langchain_core.messages import HumanMessage
image_url = "https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Gfp-wisconsin-madison-the-nature-boardwalk.jpg/2560px-Gfp-wisconsin-madison-the-nature-boardwalk.jpg"
image_data = base64.b64encode(httpx.get(image_url).content).decode("utf-8")
message = HumanMessage(
content=[
{"type": "text", "text": "describe the weather in this image"},
{
"type": "image_url",
"image_url": {"url": f"data:image/jpeg;base64,{image_data}"},
},
]
)
ai_msg = llm.invoke([message])
ai_msg.content
.. code-block:: python
"The weather in the image appears to be quite pleasant. The sky is mostly clear"
Token usage:
.. code-block:: python
ai_msg = llm.invoke(messages)
ai_msg.usage_metadata
.. code-block:: python
{"input_tokens": 28, "output_tokens": 5, "total_tokens": 33}
Logprobs:
.. code-block:: python
logprobs_llm = llm.bind(logprobs=True)
ai_msg = logprobs_llm.invoke(messages)
ai_msg.response_metadata["logprobs"]
.. code-block:: python
{
"content": [
{
"token": "J",
"bytes": [74],
"logprob": -4.9617593e-06,
"top_logprobs": [],
},
{
"token": "'adore",
"bytes": [39, 97, 100, 111, 114, 101],
"logprob": -0.25202933,
"top_logprobs": [],
},
{
"token": " la",
"bytes": [32, 108, 97],
"logprob": -0.20141791,
"top_logprobs": [],
},
{
"token": " programmation",
"bytes": [
32,
112,
114,
111,
103,
114,
97,
109,
109,
97,
116,
105,
111,
110,
],
"logprob": -1.9361265e-07,
"top_logprobs": [],
},
{
"token": ".",
"bytes": [46],
"logprob": -1.2233183e-05,
"top_logprobs": [],
},
]
}
Response metadata
.. code-block:: python
ai_msg = llm.invoke(messages)
ai_msg.response_metadata
.. code-block:: python
{
"token_usage": {
"completion_tokens": 6,
"prompt_tokens": 28,
"total_tokens": 34,
},
"model_name": "gpt-35-turbo",
"system_fingerprint": None,
"prompt_filter_results": [
{
"prompt_index": 0,
"content_filter_results": {
"hate": {"filtered": False, "severity": "safe"},
"self_harm": {"filtered": False, "severity": "safe"},
"sexual": {"filtered": False, "severity": "safe"},
"violence": {"filtered": False, "severity": "safe"},
},
}
],
"finish_reason": "stop",
"logprobs": None,
"content_filter_results": {
"hate": {"filtered": False, "severity": "safe"},
"self_harm": {"filtered": False, "severity": "safe"},
"sexual": {"filtered": False, "severity": "safe"},
"violence": {"filtered": False, "severity": "safe"},
},
}
""" # noqa: E501
azure_endpoint: Optional[str] = Field(
default_factory=from_env("AZURE_OPENAI_ENDPOINT", default=None)
)
"""Your Azure endpoint, including the resource.
Automatically inferred from env var `AZURE_OPENAI_ENDPOINT` if not provided.
Example: `https://example-resource.azure.openai.com/`
"""
deployment_name: Union[str, None] = Field(default=None, alias="azure_deployment")
"""A model deployment.
If given sets the base client URL to include `/deployments/{azure_deployment}`.
Note: this means you won't be able to use non-deployment endpoints.
"""
openai_api_version: Optional[str] = Field(
alias="api_version",
default_factory=from_env("OPENAI_API_VERSION", default=None),
)
"""Automatically inferred from env var `OPENAI_API_VERSION` if not provided."""
# Check OPENAI_API_KEY for backwards compatibility.
# TODO: Remove OPENAI_API_KEY support to avoid possible conflict when using
# other forms of azure credentials.
openai_api_key: Optional[SecretStr] = Field(
alias="api_key",
default_factory=secret_from_env(
["AZURE_OPENAI_API_KEY", "OPENAI_API_KEY"], default=None
),
)
"""Automatically inferred from env var `AZURE_OPENAI_API_KEY` if not provided."""
azure_ad_token: Optional[SecretStr] = Field(
default_factory=secret_from_env("AZURE_OPENAI_AD_TOKEN", default=None)
)
"""Your Azure Active Directory token.
Automatically inferred from env var `AZURE_OPENAI_AD_TOKEN` if not provided.
For more:
https://www.microsoft.com/en-us/security/business/identity-access/microsoft-entra-id.
"""
azure_ad_token_provider: Union[Callable[[], str], None] = None
"""A function that returns an Azure Active Directory token.
Will be invoked on every sync request. For async requests,
will be invoked if `azure_ad_async_token_provider` is not provided.
"""
azure_ad_async_token_provider: Union[Callable[[], Awaitable[str]], None] = None
"""A function that returns an Azure Active Directory token.
Will be invoked on every async request.
"""
model_version: str = ""
"""The version of the model (e.g. "0125" for gpt-3.5-0125).
Azure OpenAI doesn't return model version with the response by default so it must
be manually specified if you want to use this information downstream, e.g. when
calculating costs.
When you specify the version, it will be appended to the model name in the
response. Setting correct version will help you to calculate the cost properly.
Model version is not validated, so make sure you set it correctly to get the
correct cost.
"""
openai_api_type: Optional[str] = Field(
default_factory=from_env("OPENAI_API_TYPE", default="azure")
)
"""Legacy, for openai<1.0.0 support."""
validate_base_url: bool = True
"""If legacy arg openai_api_base is passed in, try to infer if it is a base_url or
azure_endpoint and update client params accordingly.
"""
model_name: Optional[str] = Field(default=None, alias="model") # type: ignore[assignment]
"""Name of the deployed OpenAI model, e.g. "gpt-4o", "gpt-35-turbo", etc.
Distinct from the Azure deployment name, which is set by the Azure user.
Used for tracing and token counting. Does NOT affect completion.
"""
disabled_params: Optional[Dict[str, Any]] = Field(default=None)
"""Parameters of the OpenAI client or chat.completions endpoint that should be
disabled for the given model.
Should be specified as ``{"param": None | ['val1', 'val2']}`` where the key is the
parameter and the value is either None, meaning that parameter should never be
used, or it's a list of disabled values for the parameter.
For example, older models may not support the 'parallel_tool_calls' parameter at
all, in which case ``disabled_params={"parallel_tool_calls: None}`` can ben passed
in.
If a parameter is disabled then it will not be used by default in any methods, e.g.
in
:meth:`~langchain_openai.chat_models.azure.AzureChatOpenAI.with_structured_output`.
However this does not prevent a user from directly passed in the parameter during
invocation.
By default, unless ``model_name="gpt-4o"`` is specified, then
'parallel_tools_calls' will be disabled.
"""
@classmethod
def get_lc_namespace(cls) -> List[str]:
"""Get the namespace of the langchain object."""
return ["langchain", "chat_models", "azure_openai"]
@property
def lc_secrets(self) -> Dict[str, str]:
return {
"openai_api_key": "AZURE_OPENAI_API_KEY",
"azure_ad_token": "AZURE_OPENAI_AD_TOKEN",
}
@classmethod
def is_lc_serializable(cls) -> bool:
return True
@model_validator(mode="after")
def validate_environment(self) -> Self:
"""Validate that api key and python package exists in environment."""
if self.n is not None and self.n < 1:
raise ValueError("n must be at least 1.")
elif self.n is not None and self.n > 1 and self.streaming:
raise ValueError("n must be 1 when streaming.")
if self.disabled_params is None:
# As of 09-17-2024 'parallel_tool_calls' param is only supported for gpt-4o.
if self.model_name and self.model_name == "gpt-4o":
pass
else:
self.disabled_params = {"parallel_tool_calls": None}
# Check OPENAI_ORGANIZATION for backwards compatibility.
self.openai_organization = (
self.openai_organization
or os.getenv("OPENAI_ORG_ID")
or os.getenv("OPENAI_ORGANIZATION")
)
# For backwards compatibility. Before openai v1, no distinction was made
# between azure_endpoint and base_url (openai_api_base).
openai_api_base = self.openai_api_base
if openai_api_base and self.validate_base_url:
if "/openai" not in openai_api_base:
raise ValueError(
"As of openai>=1.0.0, Azure endpoints should be specified via "
"the `azure_endpoint` param not `openai_api_base` "
"(or alias `base_url`)."
)
if self.deployment_name:
raise ValueError(
"As of openai>=1.0.0, if `azure_deployment` (or alias "
"`deployment_name`) is specified then "
"`base_url` (or alias `openai_api_base`) should not be. "
"If specifying `azure_deployment`/`deployment_name` then use "
"`azure_endpoint` instead of `base_url`.\n\n"
"For example, you could specify:\n\n"
'azure_endpoint="https://xxx.openai.azure.com/", '
'azure_deployment="my-deployment"\n\n'
"Or you can equivalently specify:\n\n"
'base_url="https://xxx.openai.azure.com/openai/deployments/my-deployment"'
)
client_params: dict = {
"api_version": self.openai_api_version,
"azure_endpoint": self.azure_endpoint,
"azure_deployment": self.deployment_name,
"api_key": (
self.openai_api_key.get_secret_value() if self.openai_api_key else None
),
"azure_ad_token": (
self.azure_ad_token.get_secret_value() if self.azure_ad_token else None
),
"azure_ad_token_provider": self.azure_ad_token_provider,
"organization": self.openai_organization,
"base_url": self.openai_api_base,
"timeout": self.request_timeout,
"default_headers": {
**(self.default_headers or {}),
"User-Agent": "langchain-partner-python-azure-openai",
},
"default_query": self.default_query,
}
if self.max_retries is not None:
client_params["max_retries"] = self.max_retries
if not self.client:
sync_specific = {"http_client": self.http_client}
self.root_client = openai.AzureOpenAI(**client_params, **sync_specific) # type: ignore[arg-type]
self.client = self.root_client.chat.completions
if not self.async_client:
async_specific = {"http_client": self.http_async_client}
if self.azure_ad_async_token_provider:
client_params["azure_ad_token_provider"] = (
self.azure_ad_async_token_provider
)
self.root_async_client = openai.AsyncAzureOpenAI(
**client_params,
**async_specific, # type: ignore[arg-type]
)
self.async_client = self.root_async_client.chat.completions
return self
@property
def _identifying_params(self) -> Dict[str, Any]:
"""Get the identifying parameters."""
return {
**{"azure_deployment": self.deployment_name},
**super()._identifying_params,
}
@property
def _llm_type(self) -> str:
return "azure-openai-chat"
@property
def lc_attributes(self) -> Dict[str, Any]:
return {
"openai_api_type": self.openai_api_type,
"openai_api_version": self.openai_api_version,
}
def _get_ls_params(
self, stop: Optional[List[str]] = None, **kwargs: Any
) -> LangSmithParams:
"""Get the parameters used to invoke the model."""
params = super()._get_ls_params(stop=stop, **kwargs)
params["ls_provider"] = "azure"
if self.model_name:
if self.model_version and self.model_version not in self.model_name:
params["ls_model_name"] = (
self.model_name + "-" + self.model_version.lstrip("-")
)
else:
params["ls_model_name"] = self.model_name
elif self.deployment_name:
params["ls_model_name"] = self.deployment_name
return params
def _create_chat_result(
self,
response: Union[dict, openai.BaseModel],
generation_info: Optional[Dict] = None,
) -> ChatResult:
chat_result = super()._create_chat_result(response, generation_info)
if not isinstance(response, dict):
response = response.model_dump()
for res in response["choices"]:
if res.get("finish_reason", None) == "content_filter":
raise ValueError(
"Azure has not provided the response due to a content filter "
"being triggered"
)
if "model" in response:
model = response["model"]
if self.model_version:
model = f"{model}-{self.model_version}"
chat_result.llm_output = chat_result.llm_output or {}
chat_result.llm_output["model_name"] = model
if "prompt_filter_results" in response:
chat_result.llm_output = chat_result.llm_output or {}
chat_result.llm_output["prompt_filter_results"] = response[
"prompt_filter_results"
]
for chat_gen, response_choice in zip(
chat_result.generations, response["choices"]
):
chat_gen.generation_info = chat_gen.generation_info or {}
chat_gen.generation_info["content_filter_results"] = response_choice.get(
"content_filter_results", {}
)
return chat_result
[docs]
def with_structured_output(
self,
schema: Optional[_DictOrPydanticClass] = None,
*,
method: Literal["function_calling", "json_mode", "json_schema"] = "json_schema",
include_raw: bool = False,
strict: Optional[bool] = None,
**kwargs: Any,
) -> Runnable[LanguageModelInput, _DictOrPydantic]:
"""Model wrapper that returns outputs formatted to match the given schema.
Args:
schema:
The output schema. Can be passed in as:
- a JSON Schema,
- a TypedDict class,
- or a Pydantic class,
- an OpenAI function/tool schema.
If ``schema`` is a Pydantic class then the model output will be a
Pydantic instance of that class, and the model-generated fields will be
validated by the Pydantic class. Otherwise the model output will be a
dict and will not be validated. See :meth:`langchain_core.utils.function_calling.convert_to_openai_tool`
for more on how to properly specify types and descriptions of
schema fields when specifying a Pydantic or TypedDict class.
method: The method for steering model generation, one of:
- "json_schema":
Uses OpenAI's Structured Output API:
https://platform.openai.com/docs/guides/structured-outputs
Supported for "gpt-4o-mini", "gpt-4o-2024-08-06", "o1", and later
models.
- "function_calling":
Uses OpenAI's tool-calling (formerly called function calling)
API: https://platform.openai.com/docs/guides/function-calling
- "json_mode":
Uses OpenAI's JSON mode. Note that if using JSON mode then you
must include instructions for formatting the output into the
desired schema into the model call:
https://platform.openai.com/docs/guides/structured-outputs/json-mode
Learn more about the differences between the methods and which models
support which methods here:
- https://platform.openai.com/docs/guides/structured-outputs/structured-outputs-vs-json-mode
- https://platform.openai.com/docs/guides/structured-outputs/function-calling-vs-response-format
include_raw:
If False then only the parsed structured output is returned. If
an error occurs during model output parsing it will be raised. If True
then both the raw model response (a BaseMessage) and the parsed model
response will be returned. If an error occurs during output parsing it
will be caught and returned as well. The final output is always a dict
with keys "raw", "parsed", and "parsing_error".
strict:
- True:
Model output is guaranteed to exactly match the schema.
The input schema will also be validated according to
https://platform.openai.com/docs/guides/structured-outputs/supported-schemas
- False:
Input schema will not be validated and model output will not be
validated.
- None:
``strict`` argument will not be passed to the model.
If schema is specified via TypedDict or JSON schema, ``strict`` is not
enabled by default. Pass ``strict=True`` to enable it.
Note: ``strict`` can only be non-null if ``method`` is
``"json_schema"`` or ``"function_calling"``.
kwargs: Additional keyword args aren't supported.
Returns:
A Runnable that takes same inputs as a :class:`langchain_core.language_models.chat.BaseChatModel`.
| If ``include_raw`` is False and ``schema`` is a Pydantic class, Runnable outputs an instance of ``schema`` (i.e., a Pydantic object). Otherwise, if ``include_raw`` is False then Runnable outputs a dict.
| If ``include_raw`` is True, then Runnable outputs a dict with keys:
- "raw": BaseMessage
- "parsed": None if there was a parsing error, otherwise the type depends on the ``schema`` as described above.
- "parsing_error": Optional[BaseException]
.. versionchanged:: 0.1.20
Added support for TypedDict class ``schema``.
.. versionchanged:: 0.1.21
Support for ``strict`` argument added.
Support for ``method="json_schema"`` added.
.. versionchanged:: 0.3.0
``method`` default changed from "function_calling" to "json_schema".
.. dropdown:: Example: schema=Pydantic class, method="json_schema", include_raw=False, strict=True
Note, OpenAI has a number of restrictions on what types of schemas can be
provided if ``strict`` = True. When using Pydantic, our model cannot
specify any Field metadata (like min/max constraints) and fields cannot
have default values.
See all constraints here: https://platform.openai.com/docs/guides/structured-outputs/supported-schemas
.. code-block:: python
from typing import Optional
from langchain_openai import AzureChatOpenAI
from pydantic import BaseModel, Field
class AnswerWithJustification(BaseModel):
'''An answer to the user question along with justification for the answer.'''
answer: str
justification: Optional[str] = Field(
default=..., description="A justification for the answer."
)
llm = AzureChatOpenAI(azure_deployment="...", model="gpt-4o", temperature=0)
structured_llm = llm.with_structured_output(AnswerWithJustification)
structured_llm.invoke(
"What weighs more a pound of bricks or a pound of feathers"
)
# -> AnswerWithJustification(
# answer='They weigh the same',
# justification='Both a pound of bricks and a pound of feathers weigh one pound. The weight is the same, but the volume or density of the objects may differ.'
# )
.. dropdown:: Example: schema=Pydantic class, method="function_calling", include_raw=False, strict=False
.. code-block:: python
from typing import Optional
from langchain_openai import AzureChatOpenAI
from pydantic import BaseModel, Field
class AnswerWithJustification(BaseModel):
'''An answer to the user question along with justification for the answer.'''
answer: str
justification: Optional[str] = Field(
default=..., description="A justification for the answer."
)
llm = AzureChatOpenAI(azure_deployment="...", model="gpt-4o", temperature=0)
structured_llm = llm.with_structured_output(
AnswerWithJustification, method="function_calling"
)
structured_llm.invoke(
"What weighs more a pound of bricks or a pound of feathers"
)
# -> AnswerWithJustification(
# answer='They weigh the same',
# justification='Both a pound of bricks and a pound of feathers weigh one pound. The weight is the same, but the volume or density of the objects may differ.'
# )
.. dropdown:: Example: schema=Pydantic class, method="json_schema", include_raw=True
.. code-block:: python
from langchain_openai import AzureChatOpenAI
from pydantic import BaseModel
class AnswerWithJustification(BaseModel):
'''An answer to the user question along with justification for the answer.'''
answer: str
justification: str
llm = AzureChatOpenAI(azure_deployment="...", model="gpt-4o", temperature=0)
structured_llm = llm.with_structured_output(
AnswerWithJustification, include_raw=True
)
structured_llm.invoke(
"What weighs more a pound of bricks or a pound of feathers"
)
# -> {
# 'raw': AIMessage(content='', additional_kwargs={'tool_calls': [{'id': 'call_Ao02pnFYXD6GN1yzc0uXPsvF', 'function': {'arguments': '{"answer":"They weigh the same.","justification":"Both a pound of bricks and a pound of feathers weigh one pound. The weight is the same, but the volume or density of the objects may differ."}', 'name': 'AnswerWithJustification'}, 'type': 'function'}]}),
# 'parsed': AnswerWithJustification(answer='They weigh the same.', justification='Both a pound of bricks and a pound of feathers weigh one pound. The weight is the same, but the volume or density of the objects may differ.'),
# 'parsing_error': None
# }
.. dropdown:: Example: schema=TypedDict class, method="json_schema", include_raw=False, strict=False
.. code-block:: python
from typing_extensions import Annotated, TypedDict
from langchain_openai import AzureChatOpenAI
class AnswerWithJustification(TypedDict):
'''An answer to the user question along with justification for the answer.'''
answer: str
justification: Annotated[
Optional[str], None, "A justification for the answer."
]
llm = AzureChatOpenAI(azure_deployment="...", model="gpt-4o", temperature=0)
structured_llm = llm.with_structured_output(AnswerWithJustification)
structured_llm.invoke(
"What weighs more a pound of bricks or a pound of feathers"
)
# -> {
# 'answer': 'They weigh the same',
# 'justification': 'Both a pound of bricks and a pound of feathers weigh one pound. The weight is the same, but the volume and density of the two substances differ.'
# }
.. dropdown:: Example: schema=OpenAI function schema, method="json_schema", include_raw=False
.. code-block:: python
from langchain_openai import AzureChatOpenAI
oai_schema = {
'name': 'AnswerWithJustification',
'description': 'An answer to the user question along with justification for the answer.',
'parameters': {
'type': 'object',
'properties': {
'answer': {'type': 'string'},
'justification': {'description': 'A justification for the answer.', 'type': 'string'}
},
'required': ['answer']
}
}
llm = AzureChatOpenAI(
azure_deployment="...",
model="gpt-4o",
temperature=0,
)
structured_llm = llm.with_structured_output(oai_schema)
structured_llm.invoke(
"What weighs more a pound of bricks or a pound of feathers"
)
# -> {
# 'answer': 'They weigh the same',
# 'justification': 'Both a pound of bricks and a pound of feathers weigh one pound. The weight is the same, but the volume and density of the two substances differ.'
# }
.. dropdown:: Example: schema=Pydantic class, method="json_mode", include_raw=True
.. code-block::
from langchain_openai import AzureChatOpenAI
from pydantic import BaseModel
class AnswerWithJustification(BaseModel):
answer: str
justification: str
llm = AzureChatOpenAI(
azure_deployment="...",
model="gpt-4o",
temperature=0,
)
structured_llm = llm.with_structured_output(
AnswerWithJustification,
method="json_mode",
include_raw=True
)
structured_llm.invoke(
"Answer the following question. "
"Make sure to return a JSON blob with keys 'answer' and 'justification'.\\n\\n"
"What's heavier a pound of bricks or a pound of feathers?"
)
# -> {
# 'raw': AIMessage(content='{\\n "answer": "They are both the same weight.",\\n "justification": "Both a pound of bricks and a pound of feathers weigh one pound. The difference lies in the volume and density of the materials, not the weight." \\n}'),
# 'parsed': AnswerWithJustification(answer='They are both the same weight.', justification='Both a pound of bricks and a pound of feathers weigh one pound. The difference lies in the volume and density of the materials, not the weight.'),
# 'parsing_error': None
# }
.. dropdown:: Example: schema=None, method="json_mode", include_raw=True
.. code-block::
structured_llm = llm.with_structured_output(method="json_mode", include_raw=True)
structured_llm.invoke(
"Answer the following question. "
"Make sure to return a JSON blob with keys 'answer' and 'justification'.\\n\\n"
"What's heavier a pound of bricks or a pound of feathers?"
)
# -> {
# 'raw': AIMessage(content='{\\n "answer": "They are both the same weight.",\\n "justification": "Both a pound of bricks and a pound of feathers weigh one pound. The difference lies in the volume and density of the materials, not the weight." \\n}'),
# 'parsed': {
# 'answer': 'They are both the same weight.',
# 'justification': 'Both a pound of bricks and a pound of feathers weigh one pound. The difference lies in the volume and density of the materials, not the weight.'
# },
# 'parsing_error': None
# }
""" # noqa: E501
return super().with_structured_output(
schema, method=method, include_raw=include_raw, strict=strict, **kwargs
)
