langchain_community.tools.golden_query.tool.GoldenQueryRun

注意

GoldenQueryRun 实现了标准的 Runnable 接口。 🏃

Runnable 接口 具有在可运行对象上可用的其他方法，例如 with_types, with_retry, assign, bind, get_graph 等。

class langchain_community.tools.golden_query.tool.GoldenQueryRun

基类： BaseTool

该工具添加了使用 Golden API 进行查询并返回 JSON 的功能。

初始化工具。

param api_wrapper: GoldenQueryAPIWrapper [Required]

param args_schema: Optional[TypeBaseModel] = None

Pydantic 模型类，用于验证和解析工具的输入参数。

Args 模式应为以下之一

• pydantic.BaseModel 的子类。

或者 - 如果在 pydantic 2 中访问 v1 命名空间，则为 pydantic.v1.BaseModel 的子类

param callback_manager: Optional[BaseCallbackManager] = None

已弃用。请改用回调。

param callbacks: Callbacks = None

在工具执行期间要调用的回调。

param description: str = "A wrapper around Golden Query API. Useful for getting entities that match a natural language query from Golden's Knowledge Base.\nExample queries:\n- companies in nanotech\n- list of cloud providers starting in 2019\nInput should be the natural language query.\nOutput is a paginated list of results or an error object in JSON format."

ToolException], str]]] = False

Handle the content of the ToolException thrown.

param handle_validation_error: Optional[Union[bool, str, Callable[[ValidationError], str]]] = False

Handle the content of the ValidationError thrown.

param metadata: Optional[Dict[str, Any]] = None

Optional metadata associated with the tool. Defaults to None. This metadata will be associated with each call to this tool, and passed as arguments to the handlers defined in callbacks. You can use these to eg identify a specific instance of a tool with its use case.

param response_format: Literal['content', 'content_and_artifact'] = 'content'

The tool response format. Defaults to ‘content’.

If “content” then the output of the tool is interpreted as the contents of a ToolMessage. If “content_and_artifact” then the output is expected to be a two-tuple corresponding to the (content, artifact) of a ToolMessage.

param return_direct: bool = False

Whether to return the tool’s output directly.

Setting this to True means that after the tool is called, the AgentExecutor will stop looping.

param tags: Optional[List[str]] = None

Optional list of tags associated with the tool. Defaults to None. These tags will be associated with each call to this tool, and passed as arguments to the handlers defined in callbacks. You can use these to eg identify a specific instance of a tool with its use case.

param verbose: bool = False

Whether to log the tool’s progress.

__call__(tool_input: str, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None) → str

Deprecated since version langchain-core==0.1.47: Use invoke instead.

Make tool callable.

Parameters

• tool_input (str) –

• callbacks (Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]]) –

Return type

str

async abatch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]

Default implementation runs ainvoke in parallel using asyncio.gather.

The default implementation of batch works well for IO bound runnables.

Subclasses should override this method if they can batch more efficiently; e.g., if the underlying Runnable uses an API which supports a batch mode.

Parameters

• inputs (List[Input]) – A list of inputs to the Runnable.

• config (Optional[Union[RunnableConfig, List[RunnableConfig]]]) – A config to use when invoking the Runnable. The config supports standard keys like ‘tags’, ‘metadata’ for tracing purposes, ‘max_concurrency’ for controlling how much work to do in parallel, and other keys. Please refer to the RunnableConfig for more details. Defaults to None.

• return_exceptions (bool) – Whether to return exceptions instead of raising them. Defaults to False.

• kwargs (Optional[Any]) – Additional keyword arguments to pass to the Runnable.

Returns

A list of outputs from the Runnable.

Return type

List[Output]

async abatch_as_completed(inputs: Sequence[Input], config: Optional[Union[RunnableConfig, Sequence[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → AsyncIterator[Tuple[int, Union[Output, Exception]]]

Run ainvoke in parallel on a list of inputs, yielding results as they complete.

Parameters

• inputs (Sequence[Input]) – A list of inputs to the Runnable.

• config (Optional[Union[RunnableConfig, Sequence[RunnableConfig]]]) – A config to use when invoking the Runnable. The config supports standard keys like ‘tags’, ‘metadata’ for tracing purposes, ‘max_concurrency’ for controlling how much work to do in parallel, and other keys. Please refer to the RunnableConfig for more details. Defaults to None. Defaults to None.

• return_exceptions (bool) – Whether to return exceptions instead of raising them. Defaults to False.

• kwargs (Optional[Any]) – Additional keyword arguments to pass to the Runnable.

Yields

A tuple of the index of the input and the output from the Runnable.

Return type

AsyncIterator[Tuple[int, Union[Output, Exception]]]

async ainvoke(input: Union[str, Dict, ToolCall], config: Optional[RunnableConfig] = None, **kwargs: Any]) → Any

Default implementation of ainvoke, calls invoke from a thread.

The default implementation allows usage of async code even if the Runnable did not implement a native async version of invoke.

Subclasses should override this method if they can run asynchronously.

Parameters

• input (Union[str, Dict, ToolCall]) –

• config (Optional[RunnableConfig]) –

• kwargs (Any) –

Return type

Any

async arun(tool_input: Union[str, Dict], verbose: Optional[bool] = None, start_color: Optional[str] = 'green', color: Optional[str] = 'green', callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, run_id: Optional[UUID] = None, config: Optional[RunnableConfig] = None, tool_call_id: Optional[str] = None, **kwargs: Any) → Any

Run the tool asynchronously.

Parameters

• tool_input (Union[str, Dict]) – The input to the tool.

• verbose (Optional[bool]) – Whether to log the tool’s progress. Defaults to None.

• start_color (Optional[str]) – The color to use when starting the tool. Defaults to ‘green’.

• color (Optional[str]) – The color to use when ending the tool. Defaults to ‘green’.

• callbacks (Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]]) – Callbacks to be called during tool execution. Defaults to None.

• tags (Optional[List[str]]) – Optional list of tags associated with the tool. Defaults to None.

• metadata (Optional[Dict[str, Any]]) – Optional metadata associated with the tool. Defaults to None.

• run_name (Optional[str]) – The name of the run. Defaults to None.

• run_id (Optional[UUID]) – The id of the run. Defaults to None.

• config (可选[RunnableConfig]) – 工具的配置。默认为 None。

• tool_call_id (可选[str]) – 工具调用的 ID。默认为 None。

• kwargs (Any) – 传递给工具的附加参数

Returns

工具的输出。

引发

ToolException – 如果工具执行期间发生错误。

Return type

Any

as_tool(args_schema: Optional[Type[BaseModel]] = None, *, name: Optional[str] = None, description: Optional[str] = None, arg_types: Optional[Dict[str, Type]] = None) → BaseTool

Beta

此 API 处于 Beta 阶段，未来可能会发生更改。

从 Runnable 创建一个 BaseTool。

as_tool 将从 Runnable 实例化一个具有名称、描述和 args_schema 的 BaseTool。在可能的情况下，模式会从 runnable.get_input_schema 推断。或者（例如，如果 Runnable 接受字典作为输入，并且未键入特定的字典键），则可以使用 args_schema 直接指定模式。您还可以传递 arg_types 以仅指定必需的参数及其类型。

Parameters

• args_schema (可选[Type[BaseModel]]) – 工具的模式。默认为 None。

• name (可选[str]) – 工具的名称。默认为 None。

• description (可选[str]) – 工具的描述。默认为 None。

• arg_types (可选[Dict[str, Type]]) – 参数名称到类型的字典。默认为 None。

Returns

一个 BaseTool 实例。

Return type

BaseTool

类型化字典输入

from typing import List
from typing_extensions import TypedDict
from langchain_core.runnables import RunnableLambda

class Args(TypedDict):
    a: int
    b: List[int]

def f(x: Args) -> str:
    return str(x["a"] * max(x["b"]))

runnable = RunnableLambda(f)
as_tool = runnable.as_tool()
as_tool.invoke({"a": 3, "b": [1, 2]})

dict 输入，通过 args_schema 指定模式

from typing import Any, Dict, List
from langchain_core.pydantic_v1 import BaseModel, Field
from langchain_core.runnables import RunnableLambda

def f(x: Dict[str, Any]) -> str:
    return str(x["a"] * max(x["b"]))

class FSchema(BaseModel):
    """Apply a function to an integer and list of integers."""

    a: int = Field(..., description="Integer")
    b: List[int] = Field(..., description="List of ints")

runnable = RunnableLambda(f)
as_tool = runnable.as_tool(FSchema)
as_tool.invoke({"a": 3, "b": [1, 2]})

dict 输入，通过 arg_types 指定模式

from typing import Any, Dict, List
from langchain_core.runnables import RunnableLambda

def f(x: Dict[str, Any]) -> str:
    return str(x["a"] * max(x["b"]))

runnable = RunnableLambda(f)
as_tool = runnable.as_tool(arg_types={"a": int, "b": List[int]})
as_tool.invoke({"a": 3, "b": [1, 2]})

字符串输入

from langchain_core.runnables import RunnableLambda

def f(x: str) -> str:
    return x + "a"

def g(x: str) -> str:
    return x + "z"

runnable = RunnableLambda(f) | g
as_tool = runnable.as_tool()
as_tool.invoke("b")

0.2.14 版本新增。

async astream(input: Input, config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → AsyncIterator[Output]

astream 的默认实现，它调用 ainvoke。如果子类支持流式输出，则应重写此方法。

Parameters

• input (Input) – Runnable 的输入。

• config (可选[RunnableConfig]) – 用于 Runnable 的配置。默认为 None。

• kwargs (Optional[Any]) – Additional keyword arguments to pass to the Runnable.

Yields

Runnable 的输出。

Return type

AsyncIterator[Output]

astream_events(input: Any, config: Optional[RunnableConfig] = None, *, version: Literal['v1', 'v2'], include_names: Optional[Sequence[str]] = None, include_types: Optional[Sequence[str]] = None, include_tags: Optional[Sequence[str]] = None, exclude_names: Optional[Sequence[str]] = None, exclude_types: Optional[Sequence[str]] = None, exclude_tags: Optional[Sequence[str]] = None, **kwargs: Any) → AsyncIterator[Union[StandardStreamEvent, CustomStreamEvent]]

Beta

此 API 处于 Beta 阶段，未来可能会发生更改。

生成事件流。

用于创建一个 StreamEvents 的迭代器，该迭代器提供关于 Runnable 进度的实时信息，包括来自中间结果的 StreamEvents。

StreamEvent 是一个具有以下模式的字典

• event: str - 事件名称的格式为：

  format: on_[runnable_type]_(start|stream|end)。

• name: str - 生成事件的 Runnable 的名称。

• run_id: str - 与给定 Runnable 执行关联的随机生成的 ID，该 Runnable 发出事件。作为父 Runnable 执行一部分调用的子 Runnable 将被分配自己的唯一 ID。

  the Runnable that emitted the event. A child Runnable that gets invoked as part of the execution of a parent Runnable is assigned its own unique ID.

• parent_ids: List[str] - 生成事件的父 runnables 的 ID。根 Runnable 将有一个空列表。父 ID 的顺序是从根到直接父级。仅适用于 API 的 v2 版本。API 的 v1 版本将返回一个空列表。

  generated the event. The root Runnable will have an empty list. The order of the parent IDs is from the root to the immediate parent. Only available for v2 version of the API. The v1 version of the API will return an empty list.

• tags: Optional[List[str]] - 生成事件的 Runnable 的标签。

  the event.

• metadata: Optional[Dict[str, Any]] - Runnable 的元数据

  that generated the event.

• data: Dict[str, Any]

下面是一个表格，说明了各种链可能发出的一些事件。为了简洁起见，元数据字段已从表格中省略。链定义已包含在表格之后。

注意 此参考表适用于模式的 V2 版本。

event	name	chunk	input	output
on_chat_model_start	[模型名称]		{“messages”: [[SystemMessage, HumanMessage]]}
on_chat_model_stream	[模型名称]	AIMessageChunk(content=”hello”)
on_chat_model_end	[模型名称]		{“messages”: [[SystemMessage, HumanMessage]]}	AIMessageChunk(content=”hello world”)
on_llm_start	[模型名称]		{‘input’: ‘hello’}
on_llm_stream	[模型名称]	‘Hello’
on_llm_end	[模型名称]		‘Hello human!’
on_chain_start	format_docs
on_chain_stream	format_docs	“hello world!, goodbye world!”
on_chain_end	format_docs		[Document(…)]	“hello world!, goodbye world!”
on_tool_start	some_tool		{“x”: 1, “y”: “2”}
on_tool_end	some_tool			{“x”: 1, “y”: “2”}
on_retriever_start	[检索器名称]		{“query”: “hello”}
on_retriever_end	[检索器名称]		{“query”: “hello”}	[Document(…), ..]
on_prompt_start	[模板名称]		{“question”: “hello”}
on_prompt_end	[模板名称]		{“question”: “hello”}	ChatPromptValue(messages: [SystemMessage, …])

除了标准事件之外，用户还可以调度自定义事件（请参阅下面的示例）。

自定义事件将仅在 API 的 v2 版本中显示！

自定义事件具有以下格式

属性	类型	描述
name	str	事件的用户定义名称。
data	Any	与事件关联的数据。这可以是任何内容，但我们建议使其可 JSON 序列化。

以下是与上面显示的标准事件关联的声明

format_docs:

def format_docs(docs: List[Document]) -> str:
    '''Format the docs.'''
    return ", ".join([doc.page_content for doc in docs])

format_docs = RunnableLambda(format_docs)

some_tool:

@tool
def some_tool(x: int, y: str) -> dict:
    '''Some_tool.'''
    return {"x": x, "y": y}

prompt:

template = ChatPromptTemplate.from_messages(
    [("system", "You are Cat Agent 007"), ("human", "{question}")]
).with_config({"run_name": "my_template", "tags": ["my_template"]})

示例

from langchain_core.runnables import RunnableLambda

async def reverse(s: str) -> str:
    return s[::-1]

chain = RunnableLambda(func=reverse)

events = [
    event async for event in chain.astream_events("hello", version="v2")
]

# will produce the following events (run_id, and parent_ids
# has been omitted for brevity):
[
    {
        "data": {"input": "hello"},
        "event": "on_chain_start",
        "metadata": {},
        "name": "reverse",
        "tags": [],
    },
    {
        "data": {"chunk": "olleh"},
        "event": "on_chain_stream",
        "metadata": {},
        "name": "reverse",
        "tags": [],
    },
    {
        "data": {"output": "olleh"},
        "event": "on_chain_end",
        "metadata": {},
        "name": "reverse",
        "tags": [],
    },
]

示例：调度自定义事件

from langchain_core.callbacks.manager import (
    adispatch_custom_event,
)
from langchain_core.runnables import RunnableLambda, RunnableConfig
import asyncio


async def slow_thing(some_input: str, config: RunnableConfig) -> str:
    """Do something that takes a long time."""
    await asyncio.sleep(1) # Placeholder for some slow operation
    await adispatch_custom_event(
        "progress_event",
        {"message": "Finished step 1 of 3"},
        config=config # Must be included for python < 3.10
    )
    await asyncio.sleep(1) # Placeholder for some slow operation
    await adispatch_custom_event(
        "progress_event",
        {"message": "Finished step 2 of 3"},
        config=config # Must be included for python < 3.10
    )
    await asyncio.sleep(1) # Placeholder for some slow operation
    return "Done"

slow_thing = RunnableLambda(slow_thing)

async for event in slow_thing.astream_events("some_input", version="v2"):
    print(event)

Parameters

• input (Any) – Runnable 的输入。

• config (可选[RunnableConfig]) – 用于 Runnable 的配置。

• version (Literal['v1', 'v2']) – 要使用的模式版本，可以是 v2 或 v1。用户应使用 v2。v1 用于向后兼容，将在 0.4.0 中弃用。在 API 稳定之前，不会分配默认值。自定义事件将仅在 v2 中显示。

• include_names (可选[Sequence[str]]) – 仅包含来自具有匹配名称的 runnables 的事件。

• include_types (可选[Sequence[str]]) – 仅包含来自具有匹配类型的 runnables 的事件。

• include_tags (可选[Sequence[str]]) – 仅包含来自具有匹配标签的 runnables 的事件。

• exclude_names (可选[Sequence[str]]) – 排除来自具有匹配名称的 runnables 的事件。

• exclude_types (可选[Sequence[str]]) – 排除来自具有匹配类型的 runnables 的事件。

• exclude_tags (可选[Sequence[str]]) – 排除来自具有匹配标签的 runnables 的事件。

• kwargs (Any) – 要传递给 Runnable 的附加关键字参数。这些将传递给 astream_log，因为此 astream_events 的实现是构建在 astream_log 之上的。

Yields

StreamEvents 的异步流。

引发

NotImplementedError – 如果版本不是 v1 或 v2。

Return type

AsyncIterator[Union[StandardStreamEvent, CustomStreamEvent]]

batch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]

默认实现使用线程池执行器并行运行 invoke。

The default implementation of batch works well for IO bound runnables.

Subclasses should override this method if they can batch more efficiently; e.g., if the underlying Runnable uses an API which supports a batch mode.

Parameters

• inputs (List[Input]) –

• config (可选[Union[RunnableConfig, List[RunnableConfig]]]) –

• return_exceptions (bool) –

• kwargs (Optional[Any]) –

Return type

List[Output]

batch_as_completed(inputs: Sequence[Input], config: Optional[Union[RunnableConfig, Sequence[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → Iterator[Tuple[int, Union[Output, Exception]]]

在输入列表上并行运行 invoke，并在结果完成时生成结果。

Parameters

• inputs (Sequence[Input]) –

• config (可选[Union[RunnableConfig, Sequence[RunnableConfig]]]) –

• return_exceptions (bool) –

• kwargs (Optional[Any]) –

Return type

Iterator[Tuple[int, Union[Output, Exception]]]

configurable_alternatives(which: ConfigurableField, *, default_key: str = 'default', prefix_keys: bool = False, **kwargs: Union[Runnable[Input, Output], Callable[[], Runnable[Input, Output]]]) → RunnableSerializable[Input, Output]

配置可在运行时设置的 Runnables 的备选项。

Parameters

• which (ConfigurableField) – 将用于选择备选项的 ConfigurableField 实例。

• default_key (str) – 如果未选择备选项，则使用的默认键。默认为“default”。

• prefix_keys (bool) – 是否使用 ConfigurableField id 作为键的前缀。默认为 False。

• **kwargs (Union[Runnable[Input, Output], Callable[[], Runnable[Input, Output]]]) – 键到 Runnable 实例或返回 Runnable 实例的可调用对象的字典。

Returns

配置了备选项的新 Runnable。

Return type

RunnableSerializable[Input, Output]

from langchain_anthropic import ChatAnthropic
from langchain_core.runnables.utils import ConfigurableField
from langchain_openai import ChatOpenAI

model = ChatAnthropic(
    model_name="claude-3-sonnet-20240229"
).configurable_alternatives(
    ConfigurableField(id="llm"),
    default_key="anthropic",
    openai=ChatOpenAI()
)

# uses the default model ChatAnthropic
print(model.invoke("which organization created you?").content)

# uses ChatOpenAI
print(
    model.with_config(
        configurable={"llm": "openai"}
    ).invoke("which organization created you?").content
)

configurable_fields(**kwargs: Union[ConfigurableField, ConfigurableFieldSingleOption, ConfigurableFieldMultiOption]) → RunnableSerializable[Input, Output]

在运行时配置特定的 Runnable 字段。

Parameters

**kwargs (Union[ConfigurableField, ConfigurableFieldSingleOption, ConfigurableFieldMultiOption]) – 要配置的 ConfigurableField 实例的字典。

Returns

配置了字段的新 Runnable。

Return type

RunnableSerializable[Input, Output]

from langchain_core.runnables import ConfigurableField
from langchain_openai import ChatOpenAI

model = ChatOpenAI(max_tokens=20).configurable_fields(
    max_tokens=ConfigurableField(
        id="output_token_number",
        name="Max tokens in the output",
        description="The maximum number of tokens in the output",
    )
)

# max_tokens = 20
print(
    "max_tokens_20: ",
    model.invoke("tell me something about chess").content
)

# max_tokens = 200
print("max_tokens_200: ", model.with_config(
    configurable={"output_token_number": 200}
    ).invoke("tell me something about chess").content
)

invoke(input: Union[str, Dict, ToolCall], config: Optional[RunnableConfig] = None, **kwargs: Any) → Any

将单个输入转换为输出。覆盖以实现。

Parameters

• input (Union[str, Dict, ToolCall]) – Runnable 的输入。

• config (可选[RunnableConfig]) – 调用 Runnable 时要使用的配置。该配置支持标准键，例如 ‘tags’、‘metadata’ 用于跟踪目的，‘max_concurrency’ 用于控制并行执行的工作量，以及其他键。请参阅 RunnableConfig 了解更多详细信息。

• kwargs (Any) –

Returns

Runnable 的输出。

Return type

Any

run(tool_input: Union[str, Dict[str, Any]], verbose: Optional[bool] = None, start_color: Optional[str] = 'green', color: Optional[str] = 'green', callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, run_id: Optional[UUID] = None, config: Optional[RunnableConfig] = None, tool_call_id: Optional[str] = None, **kwargs: Any) → Any

运行该工具。

Parameters

• tool_input (Union[str, Dict[str, Any]]) – 工具的输入。

• verbose (Optional[bool]) – Whether to log the tool’s progress. Defaults to None.

• start_color (Optional[str]) – The color to use when starting the tool. Defaults to ‘green’.

• color (Optional[str]) – The color to use when ending the tool. Defaults to ‘green’.

• callbacks (Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]]) – Callbacks to be called during tool execution. Defaults to None.

• tags (Optional[List[str]]) – Optional list of tags associated with the tool. Defaults to None.

• metadata (Optional[Dict[str, Any]]) – Optional metadata associated with the tool. Defaults to None.

• run_name (Optional[str]) – The name of the run. Defaults to None.

• run_id (Optional[UUID]) – The id of the run. Defaults to None.

• config (可选[RunnableConfig]) – 工具的配置。默认为 None。

• tool_call_id (可选[str]) – 工具调用的 ID。默认为 None。

• kwargs (Any) – 传递给工具的附加参数

Returns

工具的输出。

引发

ToolException – 如果工具执行期间发生错误。

Return type

Any

stream(input: Input, config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → Iterator[Output]

`stream` 的默认实现，它调用 `invoke`。如果子类支持流式输出，则应覆盖此方法。

Parameters

• input (Input) – Runnable 的输入。

• config (可选[RunnableConfig]) – 用于 Runnable 的配置。默认为 None。

• kwargs (Optional[Any]) – Additional keyword arguments to pass to the Runnable.

Yields

Runnable 的输出。

Return type

Iterator[Output]

to_json() → Union[SerializedConstructor, SerializedNotImplemented]

将 Runnable 序列化为 JSON。

Returns

Runnable 的 JSON 可序列化表示。

Return type

Union[SerializedConstructor, SerializedNotImplemented]

property args: dict

property is_single_input: bool

该工具是否只接受单个输入。

property tool_call_schema: Type[BaseModel]