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dba2dae987f7-0 | langchain API Reference¶
langchain.adapters¶
Classes¶
adapters.openai.ChatCompletion()
Functions¶
adapters.openai.aenumerate(iterable[, start])
Async version of enumerate.
adapters.openai.convert_dict_to_message(_dict)
adapters.openai.convert_message_to_dict(message)
adapters.openai.convert_messages_for_finetuning(...)... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-1 | agents.agent.RunnableAgent
Agent powered by runnables.
agents.agent_iterator.AgentExecutorIterator(...)
Iterator for AgentExecutor.
agents.agent_iterator.BaseAgentExecutorIterator()
Base class for AgentExecutorIterator.
agents.agent_toolkits.ainetwork.toolkit.AINetworkToolkit
Toolkit for interacting with AINetwork Bloc... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-2 | agents.agent_toolkits.openapi.planner.RequestsPatchToolWithParsing
Requests PATCH tool with LLM-instructed extraction of truncated responses.
agents.agent_toolkits.openapi.planner.RequestsPostToolWithParsing
Requests POST tool with LLM-instructed extraction of truncated responses.
agents.agent_toolkits.openapi.planner.... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-3 | agents.conversational.output_parser.ConvoOutputParser
Output parser for the conversational agent.
agents.conversational_chat.base.ConversationalChatAgent
An agent designed to hold a conversation in addition to using tools.
agents.conversational_chat.output_parser.ConvoOutputParser
Output parser for the conversational a... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-4 | Parses tool invocations and final answers in XML format.
agents.react.base.DocstoreExplorer(docstore)
Class to assist with exploration of a document store.
agents.react.base.ReActChain
[Deprecated] Chain that implements the ReAct paper.
agents.react.base.ReActDocstoreAgent
Agent for the ReAct chain.
agents.react.base.R... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-5 | agents.agent_toolkits.json.base.create_json_agent(...)
Construct a json agent from an LLM and tools.
agents.agent_toolkits.openapi.base.create_openapi_agent(...)
Construct an OpenAPI agent from an LLM and tools.
agents.agent_toolkits.openapi.planner.create_openapi_agent(...)
Instantiate OpenAI API planner and controlle... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-6 | Construct the scratchpad that lets the agent continue its thought process.
agents.format_scratchpad.log_to_messages.format_log_to_messages(...)
Construct the scratchpad that lets the agent continue its thought process.
agents.format_scratchpad.openai_functions.format_to_openai_functions(...)
Format intermediate steps.
... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-7 | Parsing utils to go from string to AgentAction or Agent Finish.
AgentAction means that an action should be taken.
This contains the name of the tool to use, the input to pass to that tool,
and a log variable (which contains a log of the agent’s thinking).
AgentFinish means that a response should be given.
This contains... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-8 | Cache directly competes with Memory. See documentation for Pros and Cons.
Class hierarchy:
BaseCache --> <name>Cache # Examples: InMemoryCache, RedisCache, GPTCache
Classes¶
cache.CassandraCache([session, keyspace, ...])
Cache that uses Cassandra / Astra DB as a backend.
cache.CassandraSemanticCache(session, ...[, ...... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-9 | Callback Handler that logs to Arize.
callbacks.arthur_callback.ArthurCallbackHandler(...)
Callback Handler that logs to Arthur platform.
callbacks.base.AsyncCallbackHandler()
Async callback handler that can be used to handle callbacks from langchain.
callbacks.base.BaseCallbackHandler()
Base callback handler that can b... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-10 | callbacks.llmonitor_callback.LLMonitorCallbackHandler([...])
Initializes the LLMonitorCallbackHandler. #### Parameters: - app_id: The app id of the app you want to report to. Defaults to None, which means that LLMONITOR_APP_ID will be used. - api_url: The url of the LLMonitor API. Defaults to None, which me... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-11 | Callback manager for retriever run.
callbacks.manager.CallbackManagerForToolRun(*, ...)
Callback manager for tool run.
callbacks.manager.ParentRunManager(*, ...[, ...])
Sync Parent Run Manager.
callbacks.manager.RunManager(*, run_id, ...)
Sync Run Manager.
callbacks.mlflow_callback.MlflowCallbackHandler([...])
Callback... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-12 | Generates markdown labels for LLMThought containers.
callbacks.streamlit.streamlit_callback_handler.LLMThoughtState(value)
Enumerator of the LLMThought state.
callbacks.streamlit.streamlit_callback_handler.StreamlitCallbackHandler(...)
A callback handler that writes to a Streamlit app.
callbacks.streamlit.streamlit_cal... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-13 | callbacks.tracers.schemas.TracerSessionBase
Base class for TracerSession.
callbacks.tracers.schemas.TracerSessionV1
TracerSessionV1 schema.
callbacks.tracers.schemas.TracerSessionV1Base
Base class for TracerSessionV1.
callbacks.tracers.schemas.TracerSessionV1Create
Create class for TracerSessionV1.
callbacks.tracers.st... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-14 | Analyze text using textstat and spacy.
callbacks.flyte_callback.import_flytekit()
Import flytekit and flytekitplugins-deck-standard.
callbacks.infino_callback.import_infino()
Import the infino client.
callbacks.labelstudio_callback.get_default_label_configs(mode)
callbacks.llmonitor_callback.identify(user_id)
callbacks... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-15 | callbacks.sagemaker_callback.save_json(data, ...)
Save dict to local file path.
callbacks.tracers.evaluation.wait_for_all_evaluators()
Wait for all tracers to finish.
callbacks.tracers.langchain.get_client()
Get the client.
callbacks.tracers.langchain.log_error_once(...)
Log an error once.
callbacks.tracers.langchain.w... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-16 | Load json file to a dictionary.
callbacks.whylabs_callback.import_langkit([...])
Import the langkit python package and raise an error if it is not installed.
langchain.chains¶
Chains are easily reusable components linked together.
Chains encode a sequence of calls to components like models, document retrievers,
other C... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-17 | Combining documents by mapping a chain over them, then reranking results.
chains.combine_documents.reduce.AsyncCombineDocsProtocol(...)
Interface for the combine_docs method.
chains.combine_documents.reduce.CombineDocsProtocol(...)
Interface for the combine_docs method.
chains.combine_documents.reduce.ReduceDocumentsCh... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-18 | chains.graph_qa.cypher.GraphCypherQAChain
Chain for question-answering against a graph by generating Cypher statements.
chains.graph_qa.falkordb.FalkorDBQAChain
Chain for question-answering against a graph by generating Cypher statements.
chains.graph_qa.hugegraph.HugeGraphQAChain
Chain for question-answering against a... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-19 | Chain that requests a URL and then uses an LLM to parse results.
chains.llm_summarization_checker.base.LLMSummarizationCheckerChain
Chain for question-answering with self-verification.
chains.llm_symbolic_math.base.LLMSymbolicMathChain
Chain that interprets a prompt and executes python code to do symbolic math.
chains.... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-20 | Question-answering with sources over an index.
chains.qa_with_sources.vector_db.VectorDBQAWithSourcesChain
Question-answering with sources over a vector database.
chains.query_constructor.base.StructuredQueryOutputParser
Output parser that parses a structured query.
chains.query_constructor.ir.Comparator(value)
Enumera... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-21 | chains.router.multi_prompt.MultiPromptChain
A multi-route chain that uses an LLM router chain to choose amongst prompts.
chains.router.multi_retrieval_qa.MultiRetrievalQAChain
A multi-route chain that uses an LLM router chain to choose amongst retrieval qa chains.
chains.sequential.SequentialChain
Chain where the outpu... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-22 | Convert a raw function/class to an OpenAI function.
chains.openai_functions.base.create_openai_fn_chain(...)
Create an LLM chain that uses OpenAI functions.
chains.openai_functions.base.create_structured_output_chain(...)
Create an LLMChain that uses an OpenAI function to get a structured output.
chains.openai_function... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-23 | Load a question answering with sources chain.
chains.query_constructor.base.load_query_constructor_chain(...)
Load a query constructor chain.
chains.query_constructor.parser.get_parser([...])
Returns a parser for the query language.
chains.query_constructor.parser.v_args(...)
Dummy decorator for when lark is not instal... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-24 | chat_loaders.utils.map_ai_messages_in_session(...)
Convert messages from the specified 'sender' to AI messages.
chat_loaders.utils.merge_chat_runs(chat_sessions)
Merge chat runs together.
chat_loaders.utils.merge_chat_runs_in_session(...)
Merge chat runs together in a chat session.
langchain.chat_models¶
Chat Models ar... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-25 | chat_models.fake.FakeListChatModel
Fake ChatModel for testing purposes.
chat_models.fake.FakeMessagesListChatModel
Create a new model by parsing and validating input data from keyword arguments.
chat_models.fireworks.ChatFireworks
Fireworks Chat models.
chat_models.google_palm.ChatGooglePalm
Google PaLM Chat models API... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-26 | chat_models.vertexai.ChatVertexAI
Vertex AI Chat large language models API.
Functions¶
chat_models.anthropic.convert_messages_to_prompt_anthropic(...)
Format a list of messages into a full prompt for the Anthropic model
chat_models.baidu_qianfan_endpoint.convert_message_to_dict(message)
chat_models.fireworks.acompletio... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-27 | Mixin class that supports adding texts.
docstore.base.Docstore()
Interface to access to place that stores documents.
docstore.in_memory.InMemoryDocstore([_dict])
Simple in memory docstore in the form of a dict.
docstore.wikipedia.Wikipedia()
Wrapper around wikipedia API.
langchain.document_loaders¶
Document Loaders ar... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-28 | Load local Airbyte json files.
document_loaders.airtable.AirtableLoader(...)
Load the Airtable tables.
document_loaders.apify_dataset.ApifyDatasetLoader
Load datasets from Apify web scraping, crawling, and data extraction platform.
document_loaders.arcgis_loader.ArcGISLoader(layer)
Load records from an ArcGIS FeatureLa... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-29 | Load blobs in the local file system.
document_loaders.blob_loaders.schema.Blob
Blob represents raw data by either reference or value.
document_loaders.blob_loaders.schema.BlobLoader()
Abstract interface for blob loaders implementation.
document_loaders.blob_loaders.youtube_audio.YoutubeAudioLoader(...)
Load YouTube url... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-30 | Load Datadog logs.
document_loaders.dataframe.BaseDataFrameLoader(...)
Initialize with dataframe object.
document_loaders.dataframe.DataFrameLoader(...)
Load Pandas DataFrame.
document_loaders.diffbot.DiffbotLoader(...)
Load Diffbot json file.
document_loaders.directory.DirectoryLoader(...)
Load from a directory.
docum... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-31 | document_loaders.facebook_chat.FacebookChatLoader(path)
Load Facebook Chat messages directory dump.
document_loaders.fauna.FaunaLoader(query, ...)
Load from FaunaDB.
document_loaders.figma.FigmaFileLoader(...)
Load Figma file.
document_loaders.gcs_directory.GCSDirectoryLoader(...)
Load from GCS directory.
document_load... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-32 | document_loaders.image_captions.ImageCaptionLoader(...)
Load image captions.
document_loaders.imsdb.IMSDbLoader([...])
Load IMSDb webpages.
document_loaders.iugu.IuguLoader(resource[, ...])
Load from IUGU.
document_loaders.joplin.JoplinLoader([...])
Load notes from Joplin.
document_loaders.json_loader.JSONLoader(...)
L... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-33 | Load from any file type using Nuclia Understanding API.
document_loaders.obs_directory.OBSDirectoryLoader(...)
Load from Huawei OBS directory.
document_loaders.obs_file.OBSFileLoader(...)
Load from the Huawei OBS file.
document_loaders.obsidian.ObsidianLoader(path)
Load Obsidian files from directory.
document_loaders.o... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-34 | Code segmenter for JavaScript.
document_loaders.parsers.language.language_parser.LanguageParser([...])
Parse using the respective programming language syntax.
document_loaders.parsers.language.python.PythonSegmenter(code)
Code segmenter for Python.
document_loaders.parsers.msword.MsWordParser()
document_loaders.parsers... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-35 | Load PDF files as HTML content using PDFMiner.
document_loaders.pdf.PDFPlumberLoader(file_path)
Load PDF files using pdfplumber.
document_loaders.pdf.PyMuPDFLoader(file_path, *)
Load PDF files using PyMuPDF.
document_loaders.pdf.PyPDFDirectoryLoader(path)
Load a directory with PDF files using pypdf and chunks at charac... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-36 | Column not found error.
document_loaders.rocksetdb.RocksetLoader(...)
Load from a Rockset database.
document_loaders.rss.RSSFeedLoader([urls, ...])
Load news articles from RSS feeds using Unstructured.
document_loaders.rst.UnstructuredRSTLoader(...)
Load RST files using Unstructured.
document_loaders.rtf.UnstructuredRT... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-37 | document_loaders.text.TextLoader(file_path)
Load text file.
document_loaders.tomarkdown.ToMarkdownLoader(...)
Load HTML using 2markdown API.
document_loaders.toml.TomlLoader(source)
Load TOML files.
document_loaders.trello.TrelloLoader(client, ...)
Load cards from a Trello board.
document_loaders.tsv.UnstructuredTSVLoa... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-38 | Load WhatsApp messages text file.
document_loaders.wikipedia.WikipediaLoader(query)
Load from Wikipedia.
document_loaders.word_document.Docx2txtLoader(...)
Load DOCX file using docx2txt and chunks at character level.
document_loaders.word_document.UnstructuredWordDocumentLoader(...)
Load Microsof Word file using Unstru... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-39 | Retrieve a list of elements from the Unstructured API.
document_loaders.unstructured.satisfies_min_unstructured_version(...)
Check if the installed Unstructured version exceeds the minimum version for the feature in question.
document_loaders.unstructured.validate_unstructured_version(...)
Raise an error if the Unstruc... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-40 | document_transformers.nuclia_text_transform.NucliaTextTransformer(nua)
The Nuclia Understanding API splits into paragraphs and sentences, identifies entities, provides a summary of the text and generates embeddings for all sentences.
document_transformers.openai_functions.OpenAIMetadataTagger
Extract metadata tags from... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-41 | DashScope embedding models.
embeddings.deepinfra.DeepInfraEmbeddings
Deep Infra's embedding inference service.
embeddings.edenai.EdenAiEmbeddings
EdenAI embedding.
embeddings.elasticsearch.ElasticsearchEmbeddings(...)
Elasticsearch embedding models.
embeddings.embaas.EmbaasEmbeddings
Embaas's embedding service.
embeddi... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-42 | embeddings.jina.JinaEmbeddings
Jina embedding models.
embeddings.llamacpp.LlamaCppEmbeddings
llama.cpp embedding models.
embeddings.llm_rails.LLMRailsEmbeddings
LLMRails embedding models.
embeddings.localai.LocalAIEmbeddings
LocalAI embedding models.
embeddings.minimax.MiniMaxEmbeddings
MiniMax's embedding service.
emb... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-43 | embeddings.tensorflow_hub.TensorflowHubEmbeddings
TensorflowHub embedding models.
embeddings.vertexai.VertexAIEmbeddings
Google Cloud VertexAI embedding models.
embeddings.xinference.XinferenceEmbeddings([...])
Wrapper around xinference embedding models.
Functions¶
embeddings.dashscope.embed_with_retry(...)
Use tenacit... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-44 | name of the dataset to load.
from langchain.evaluation import load_dataset
ds = load_dataset("llm-math")
Some common use cases for evaluation include:
Grading the accuracy of a response against ground truth answers: QAEvalChain
Comparing the output of two models: PairwiseStringEvalChain or LabeledPairwiseStringEvalChai... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-45 | evaluation.comparison.eval_chain.PairwiseStringEvalChain
A chain for comparing two outputs, such as the outputs
evaluation.comparison.eval_chain.PairwiseStringResultOutputParser
A parser for the output of the PairwiseStringEvalChain.
evaluation.criteria.eval_chain.Criteria(value)
A Criteria to evaluate.
evaluation.crit... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-46 | evaluation.schema.EvaluatorType(value[, ...])
The types of the evaluators.
evaluation.schema.LLMEvalChain
A base class for evaluators that use an LLM.
evaluation.schema.PairwiseStringEvaluator()
Compare the output of two models (or two outputs of the same model).
evaluation.schema.StringEvaluator()
Grade, tag, or other... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-47 | HugeGraph wrapper for graph operations
graphs.kuzu_graph.KuzuGraph(db[, database])
Kùzu wrapper for graph operations.
graphs.memgraph_graph.MemgraphGraph(url, ...)
Memgraph wrapper for graph operations.
graphs.nebula_graph.NebulaGraph(space[, ...])
NebulaGraph wrapper for graph operations NebulaGraph inherits methods f... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-48 | Code to support various indexing workflows.
Provides code to:
Create knowledge graphs from data.
Support indexing workflows from LangChain data loaders to vectorstores.
For indexing workflows, this code is used to avoid writing duplicated content
into the vectostore and to avoid over-writing content if it’s unchanged.
... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-49 | llms.anthropic.Anthropic
Anthropic large language models.
llms.anyscale.Anyscale
Anyscale Service models.
llms.aviary.Aviary
Aviary hosted models.
llms.aviary.AviaryBackend(backend_url, bearer)
Aviary backend.
llms.azureml_endpoint.AzureMLEndpointClient(...)
AzureML Managed Endpoint client.
llms.azureml_endpoint.AzureM... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-50 | llms.bedrock.LLMInputOutputAdapter()
Adapter class to prepare the inputs from Langchain to a format that LLM model expects.
llms.bittensor.NIBittensorLLM
NIBittensorLLM is created by Neural Internet (https://neuralinternet.ai/), powered by Bittensor, a decentralized network full of different AI models.
llms.cerebriumai... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-51 | llms.gradient_ai.GradientLLM
Gradient.ai LLM Endpoints.
llms.huggingface_endpoint.HuggingFaceEndpoint
HuggingFace Endpoint models.
llms.huggingface_hub.HuggingFaceHub
HuggingFaceHub models.
llms.huggingface_pipeline.HuggingFacePipeline
HuggingFace Pipeline API.
llms.huggingface_text_gen_inference.HuggingFaceTextGenInf... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-52 | llms.ollama.Ollama
Ollama locally runs large language models.
llms.opaqueprompts.OpaquePrompts
An LLM wrapper that uses OpaquePrompts to sanitize prompts.
llms.openai.AzureOpenAI
Azure-specific OpenAI large language models.
llms.openai.BaseOpenAI
Base OpenAI large language model class.
llms.openai.OpenAI
OpenAI large l... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-53 | Model inference on self-hosted remote hardware.
llms.self_hosted_hugging_face.SelfHostedHuggingFaceLLM
HuggingFace Pipeline API to run on self-hosted remote hardware.
llms.stochasticai.StochasticAI
StochasticAI large language models.
llms.symblai_nebula.Nebula
Nebula Service models.
llms.textgen.TextGen
text-generation... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-54 | Use tenacity to retry the completion call.
llms.cohere.completion_with_retry(llm, **kwargs)
Use tenacity to retry the completion call.
llms.databricks.get_default_api_token()
Gets the default Databricks personal access token.
llms.databricks.get_default_host()
Gets the default Databricks workspace hostname.
llms.databr... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-55 | llms.tongyi.generate_with_retry(llm, **kwargs)
Use tenacity to retry the completion call.
llms.tongyi.stream_generate_with_retry(llm, ...)
Use tenacity to retry the completion call.
llms.utils.enforce_stop_tokens(text, stop)
Cut off the text as soon as any stop words occur.
llms.vertexai.acompletion_with_retry(llm, *ar... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-56 | Revive a LangChain class from a JSON string.
load.serializable.to_json_not_implemented(obj)
Serialize a "not implemented" object.
langchain.memory¶
Memory maintains Chain state, incorporating context from past runs.
Class hierarchy for Memory:
BaseMemory --> BaseChatMemory --> <name>Memory # Examples: ZepMemory, Motor... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-57 | memory.chat_message_histories.mongodb.MongoDBChatMessageHistory(...)
Chat message history that stores history in MongoDB.
memory.chat_message_histories.postgres.PostgresChatMessageHistory(...)
Chat message history stored in a Postgres database.
memory.chat_message_histories.redis.RedisChatMessageHistory(...)
Chat messa... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-58 | A memory wrapper that is read-only and cannot be changed.
memory.simple.SimpleMemory
Simple memory for storing context or other information that shouldn't ever change between prompts.
memory.summary.ConversationSummaryMemory
Conversation summarizer to chat memory.
memory.summary.SummarizerMixin
Mixin for summarizer.
me... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-59 | output_parsers.json.SimpleJsonOutputParser
Parse the output of an LLM call to a JSON object.
output_parsers.list.CommaSeparatedListOutputParser
Parse the output of an LLM call to a comma-separated list.
output_parsers.list.ListOutputParser
Parse the output of an LLM call to a list.
output_parsers.list.NumberedListOutpu... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-60 | output_parsers.xml.XMLOutputParser
Parse an output using xml format.
Functions¶
output_parsers.json.parse_and_check_json_markdown(...)
Parse a JSON string from a Markdown string and check that it contains the expected keys.
output_parsers.json.parse_json_markdown(...)
Parse a JSON string from a Markdown string.
output_... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-61 | prompts.chat.ChatPromptValue
Chat prompt value.
prompts.chat.ChatPromptValueConcrete
Chat prompt value which explicitly lists out the message types it accepts.
prompts.chat.HumanMessagePromptTemplate
Human message prompt template.
prompts.chat.MessagesPlaceholder
Prompt template that assumes variable is already list of... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-62 | prompts.example_selector.ngram_overlap.ngram_overlap_score(...)
Compute ngram overlap score of source and example as sentence_bleu score.
prompts.example_selector.semantic_similarity.sorted_values(values)
Return a list of values in dict sorted by key.
prompts.loading.load_prompt(path)
Unified method for loading a promp... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-63 | Databerry API retriever.
retrievers.docarray.DocArrayRetriever
DocArray Document Indices retriever.
retrievers.docarray.SearchType(value[, ...])
Enumerator of the types of search to perform.
retrievers.document_compressors.base.BaseDocumentCompressor
Base class for document compressors.
retrievers.document_compressors.... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-64 | Amazon Kendra Index retriever.
retrievers.kendra.DocumentAttribute
Document attribute.
retrievers.kendra.DocumentAttributeValue
Value of a document attribute.
retrievers.kendra.Highlight
Information that highlights the key words in the excerpt.
retrievers.kendra.QueryResult
Amazon Kendra Query API search result.
retrie... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-65 | Retrieve small chunks then retrieve their parent documents.
retrievers.pinecone_hybrid_search.PineconeHybridSearchRetriever
Pinecone Hybrid Search retriever.
retrievers.pubmed.PubMedRetriever
PubMed API retriever.
retrievers.re_phraser.RePhraseQueryRetriever
Given a query, use an LLM to re-phrase it.
retrievers.remote_... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-66 | Translate
retrievers.self_query.supabase.SupabaseVectorTranslator()
Translate Langchain filters to Supabase PostgREST filters.
retrievers.self_query.timescalevector.TimescaleVectorTranslator()
Translate the internal query language elements to valid filters.
retrievers.self_query.vectara.VectaraTranslator()
Translate Ve... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-67 | retrievers.document_compressors.chain_extract.default_get_input(...)
Return the compression chain input.
retrievers.document_compressors.chain_filter.default_get_input(...)
Return the compression chain input.
retrievers.kendra.clean_excerpt(excerpt)
Clean an excerpt from Kendra.
retrievers.kendra.combined_text(item)
Co... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-68 | schema.agent.AgentActionMessageLog
Create a new model by parsing and validating input data from keyword arguments.
schema.agent.AgentFinish
The final return value of an ActionAgent.
schema.cache.BaseCache()
Base interface for cache.
schema.chat.ChatSession
Chat Session represents a single conversation, channel, or othe... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-69 | schema.output.ChatGenerationChunk
A ChatGeneration chunk, which can be concatenated with other
schema.output.ChatResult
Class that contains all results for a single chat model call.
schema.output.Generation
A single text generation output.
schema.output.GenerationChunk
A Generation chunk, which can be concatenated with... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-70 | A Runnable that selects which branch to run based on a condition.
schema.runnable.base.RunnableEach
A runnable that delegates calls to another runnable with each element of the input sequence.
schema.runnable.base.RunnableGenerator(transform)
A runnable that runs a generator function.
schema.runnable.base.RunnableLambd... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-71 | Functions¶
schema.messages.get_buffer_string(messages)
Convert sequence of Messages to strings and concatenate them into one string.
schema.messages.messages_from_dict(messages)
Convert a sequence of messages from dicts to Message objects.
schema.messages.messages_to_dict(messages)
Convert a sequence of Messages to a l... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-72 | Indent all lines of text after the first line.
langchain.smith¶
LangSmith utilities.
This module provides utilities for connecting to LangSmith. For more information on LangSmith, see the LangSmith documentation.
Evaluation
LangSmith helps you evaluate Chains and other language model application components using a numb... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-73 | from langchain.evaluation import StringEvaluator
class MyStringEvaluator(StringEvaluator):
@property
def requires_input(self) -> bool:
return False
@property
def requires_reference(self) -> bool:
return True
@property
def evaluation_name(self) -> str:
return "exact_match"... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-74 | smith.evaluation.string_run_evaluator.StringExampleMapper
Map an example, or row in the dataset, to the inputs of an evaluation.
smith.evaluation.string_run_evaluator.StringRunEvaluatorChain
Evaluate Run and optional examples.
smith.evaluation.string_run_evaluator.StringRunMapper
Extract items to evaluate from the run ... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-75 | RecursiveCharacterTextSplitter --> <name>TextSplitter
Note: MarkdownHeaderTextSplitter does not derive from TextSplitter.
Main helpers:
Document, Tokenizer, Language, LineType, HeaderType
Classes¶
text_splitter.CharacterTextSplitter([...])
Splitting text that looks at characters.
text_splitter.HeaderType
Header type a... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-76 | Split incoming text and return chunks using tokenizer.
langchain.tools¶
Tools are classes that an Agent uses to interact with the world.
Each tool has a description. Agent uses the description to choose the right
tool for the job.
Class hierarchy:
ToolMetaclass --> BaseTool --> <name>Tool # Examples: AIPluginTool, Bas... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-77 | Create a new model by parsing and validating input data from keyword arguments.
tools.amadeus.base.AmadeusBaseTool
Base Tool for Amadeus.
tools.amadeus.closest_airport.AmadeusClosestAirport
Tool for finding the closest airport to a particular location.
tools.amadeus.closest_airport.ClosestAirportSchema
Schema for the A... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-78 | Tool that queries the Bing search API.
tools.brave_search.tool.BraveSearch
Tool that queries the BraveSearch.
tools.dataforseo_api_search.tool.DataForSeoAPISearchResults
Tool that queries the DataForSeo Google Search API and get back json.
tools.dataforseo_api_search.tool.DataForSeoAPISearchRun
Tool that queries the Da... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-79 | Models available for Eleven Labs Text2Speech.
tools.eleven_labs.text2speech.ElevenLabsModel(value)
Models available for Eleven Labs Text2Speech.
tools.eleven_labs.text2speech.ElevenLabsText2SpeechTool
Tool that queries the Eleven Labs Text2Speech API.
tools.file_management.copy.CopyFileTool
Tool that copies a file.
too... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-80 | tools.gmail.create_draft.CreateDraftSchema
Input for CreateDraftTool.
tools.gmail.create_draft.GmailCreateDraft
Tool that creates a draft email for Gmail.
tools.gmail.get_message.GmailGetMessage
Tool that gets a message by ID from Gmail.
tools.gmail.get_message.SearchArgsSchema
Input for GetMessageTool.
tools.gmail.get... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-81 | tools.jira.tool.JiraAction
Tool that queries the Atlassian Jira API.
tools.json.tool.JsonGetValueTool
Tool for getting a value in a JSON spec.
tools.json.tool.JsonListKeysTool
Tool for listing keys in a JSON spec.
tools.json.tool.JsonSpec
Base class for JSON spec.
tools.metaphor_search.tool.MetaphorSearchResults
Tool t... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-82 | tools.office365.send_event.SendEventSchema
Input for CreateEvent Tool.
tools.office365.send_message.O365SendMessage
Tool for sending an email in Office 365.
tools.office365.send_message.SendMessageSchema
Input for SendMessageTool.
tools.openapi.utils.api_models.APIOperation
A model for a single API operation.
tools.ope... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-83 | Input for NavigateToolInput.
tools.playwright.navigate_back.NavigateBackTool
Navigate back to the previous page in the browser history.
tools.plugin.AIPlugin
AI Plugin Definition.
tools.plugin.AIPluginTool
Tool for getting the OpenAPI spec for an AI Plugin.
tools.plugin.AIPluginToolSchema
Schema for AIPluginTool.
tools... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-84 | tools.searchapi.tool.SearchAPIRun
Tool that queries the SearchApi.io search API.
tools.searx_search.tool.SearxSearchResults
Tool that queries a Searx instance and gets back json.
tools.searx_search.tool.SearxSearchRun
Tool that queries a Searx instance.
tools.shell.tool.ShellInput
Commands for the Bash Shell tool.
tool... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-85 | tools.vectorstore.tool.VectorStoreQATool
Tool for the VectorDBQA chain.
tools.vectorstore.tool.VectorStoreQAWithSourcesTool
Tool for the VectorDBQAWithSources chain.
tools.wikipedia.tool.WikipediaQueryRun
Tool that searches the Wikipedia API.
tools.wolfram_alpha.tool.WolframAlphaQueryRun
Tool that queries using the Wol... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-86 | Clean email body.
tools.gmail.utils.get_gmail_credentials([...])
Get credentials.
tools.gmail.utils.import_google()
Import google libraries.
tools.gmail.utils.import_googleapiclient_resource_builder()
Import googleapiclient.discovery.build function.
tools.gmail.utils.import_installed_app_flow()
Import InstalledAppFlow ... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-87 | langchain.tools.render¶
Different methods for rendering Tools to be passed to LLMs.
Depending on the LLM you are using and the prompting strategy you are using,
you may want Tools to be rendered in a different way.
This module contains various ways to render tools.
Functions¶
tools.render.format_tool_to_openai_function... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-88 | utilities.github.GitHubAPIWrapper
Wrapper for GitHub API.
utilities.gitlab.GitLabAPIWrapper
Wrapper for GitLab API.
utilities.golden_query.GoldenQueryAPIWrapper
Wrapper for Golden.
utilities.google_places_api.GooglePlacesAPIWrapper
Wrapper around Google Places API.
utilities.google_search.GoogleSearchAPIWrapper
Wrapper... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-89 | Wrapper around SearchApi API.
utilities.searx_search.SearxResults(data)
Dict like wrapper around search api results.
utilities.searx_search.SearxSearchWrapper
Wrapper for Searx API.
utilities.serpapi.HiddenPrints()
Context manager to hide prints.
utilities.serpapi.SerpAPIWrapper
Wrapper around SerpAPI.
utilities.spark_... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-90 | utilities.sql_database.truncate_word(...[, ...])
Truncate a string to a certain number of words, based on the max string length.
utilities.vertexai.init_vertexai([project, ...])
Init vertexai.
utilities.vertexai.raise_vertex_import_error([...])
Raise ImportError related to Vertex SDK being not available.
langchain.util... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-91 | utils.input.get_bolded_text(text)
Get bolded text.
utils.input.get_color_mapping(items[, ...])
Get mapping for items to a support color.
utils.input.get_colored_text(text, color)
Get colored text.
utils.input.print_text(text[, color, end, file])
Print text with highlighting and no end characters.
utils.iter.batch_itera... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-92 | utils.utils.mock_now(dt_value)
Context manager for mocking out datetime.now() in unit tests.
utils.utils.raise_for_status_with_text(response)
Raise an error with the response text.
utils.utils.xor_args(*arg_groups)
Validate specified keyword args are mutually exclusive.
langchain.vectorstores¶
Vector store stores embed... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-93 | BagelDB.ai vector store.
vectorstores.cassandra.Cassandra(embedding, ...)
Wrapper around Apache Cassandra(R) for vector-store workloads.
vectorstores.chroma.Chroma([...])
ChromaDB vector store.
vectorstores.clarifai.Clarifai([user_id, ...])
Clarifai AI vector store.
vectorstores.clickhouse.Clickhouse(embedding)
ClickHo... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-94 | Sparse retrieval strategy using the text_expansion processor.
vectorstores.epsilla.Epsilla(client, embeddings)
Wrapper around Epsilla vector database.
vectorstores.faiss.FAISS(embedding_function, ...)
Meta Faiss vector store.
vectorstores.hologres.Hologres(...[, ndims, ...])
Hologres API vector store.
vectorstores.holo... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-95 | NucliaDB vector store.
vectorstores.opensearch_vector_search.OpenSearchVectorSearch(...)
Amazon OpenSearch Vector Engine vector store.
vectorstores.pgembedding.BaseModel(**kwargs)
Base model for all SQL stores.
vectorstores.pgembedding.CollectionStore(...)
Collection store.
vectorstores.pgembedding.EmbeddingStore(**kwa... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-96 | vectorstores.redis.filters.RedisText(field)
A RedisText is a RedisFilterField representing a text field in a Redis index.
vectorstores.redis.schema.FlatVectorField
Create a new model by parsing and validating input data from keyword arguments.
vectorstores.redis.schema.HNSWVectorField
Create a new model by parsing and ... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-97 | Serializes data in Apache Parquet format using the pyarrow package.
vectorstores.sklearn.SKLearnVectorStore(...)
Simple in-memory vector store based on the scikit-learn library NearestNeighbors implementation.
vectorstores.sklearn.SKLearnVectorStoreException
Exception raised by SKLearnVectorStore.
vectorstores.sqlitevs... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-98 | vectorstores.vectara.Vectara([...])
Vectara API vector store.
vectorstores.vectara.VectaraRetriever
Retriever class for Vectara.
vectorstores.weaviate.Weaviate(client, ...)
Weaviate vector store.
vectorstores.xata.XataVectorStore(api_key, ...)
Xata vector store.
vectorstores.zep.CollectionConfig(name, ...)
Configuratio... | https://api.python.langchain.com/en/latest/api_reference.html |
dba2dae987f7-99 | vectorstores.scann.normalize(x)
Normalize vectors to unit length.
vectorstores.starrocks.debug_output(s)
Print a debug message if DEBUG is True.
vectorstores.starrocks.get_named_result(...)
Get a named result from a query.
vectorstores.starrocks.has_mul_sub_str(s, *args)
Check if a string has multiple substrings.
vecto... | https://api.python.langchain.com/en/latest/api_reference.html |
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