id stringlengths 14 16 | text stringlengths 31 2.05k | source stringlengths 49 114 |
|---|---|---|
92e5897c3119-0 | .ipynb
.pdf
Model Comparison
Model Comparison#
Constructing your language model application will likely involved choosing between many different options of prompts, models, and even chains to use. When doing so, you will want to compare these different options on different inputs in an easy, flexible, and intuitive way... | https://python.langchain.com/en/latest/model_laboratory.html |
92e5897c3119-1 | pink
prompt = PromptTemplate(template="What is the capital of {state}?", input_variables=["state"])
model_lab_with_prompt = ModelLaboratory.from_llms(llms, prompt=prompt)
model_lab_with_prompt.compare("New York")
Input:
New York
OpenAI
Params: {'model': 'text-davinci-002', 'temperature': 0.0, 'max_tokens': 256, 'top_p'... | https://python.langchain.com/en/latest/model_laboratory.html |
92e5897c3119-2 | names = [str(open_ai_llm), str(cohere_llm)]
model_lab = ModelLaboratory(chains, names=names)
model_lab.compare("What is the hometown of the reigning men's U.S. Open champion?")
Input:
What is the hometown of the reigning men's U.S. Open champion?
OpenAI
Params: {'model': 'text-davinci-002', 'temperature': 0.0, 'max_tok... | https://python.langchain.com/en/latest/model_laboratory.html |
92e5897c3119-3 | So the final answer is:
Carlos Alcaraz
By Harrison Chase
© Copyright 2023, Harrison Chase.
Last updated on Mar 28, 2023. | https://python.langchain.com/en/latest/model_laboratory.html |
7a20e8db90b3-0 | .rst
.pdf
LangChain Gallery
Contents
Open Source
Misc. Colab Notebooks
Proprietary
LangChain Gallery#
Lots of people have built some pretty awesome stuff with LangChain.
This is a collection of our favorites.
If you see any other demos that you think we should highlight, be sure to let us know!
Open Source#
HowDoI.ai... | https://python.langchain.com/en/latest/gallery.html |
7a20e8db90b3-1 | Record sounds of anything (birds, wind, fire, train station) and chat with it.
ChatGPT LangChain
This simple application demonstrates a conversational agent implemented with OpenAI GPT-3.5 and LangChain. When necessary, it leverages tools for complex math, searching the internet, and accessing news and weather.
GPT Mat... | https://python.langchain.com/en/latest/gallery.html |
7a20e8db90b3-2 | Daimon
A chat-based AI personal assistant with long-term memory about you.
AI Assisted SQL Query Generator
An app to write SQL using natural language, and execute against real DB.
Clerkie
Stack Tracing QA Bot to help debug complex stack tracing (especially the ones that go multi-function/file deep).
Sales Email Writer
... | https://python.langchain.com/en/latest/gallery.html |
6d8a57828694-0 | .md
.pdf
Tracing
Contents
Tracing Walkthrough
Changing Sessions
Tracing#
By enabling tracing in your LangChain runs, you’ll be able to more effectively visualize, step through, and debug your chains and agents.
First, you should install tracing and set up your environment properly.
You can use either a locally hosted... | https://python.langchain.com/en/latest/tracing.html |
6d8a57828694-1 | Changing Sessions#
To initially record traces to a session other than "default", you can set the LANGCHAIN_SESSION environment variable to the name of the session you want to record to:
import os
os.environ["LANGCHAIN_HANDLER"] = "langchain"
os.environ["LANGCHAIN_SESSION"] = "my_session" # Make sure this session actual... | https://python.langchain.com/en/latest/tracing.html |
2caf5235632c-0 | .rst
.pdf
API References
API References#
All of LangChain’s reference documentation, in one place.
Full documentation on all methods, classes, and APIs in LangChain.
Prompts
Utilities
Chains
Agents
previous
Integrations
next
Utilities
By Harrison Chase
© Copyright 2023, Harrison Chase.
Last updated ... | https://python.langchain.com/en/latest/reference.html |
f0b03329f5fa-0 | .rst
.pdf
Welcome to LangChain
Contents
Getting Started
Modules
Use Cases
Reference Docs
LangChain Ecosystem
Additional Resources
Welcome to LangChain#
LangChain is a framework for developing applications powered by language models. We believe that the most powerful and differentiated applications will not only call ... | https://python.langchain.com/en/latest/index.html |
f0b03329f5fa-1 | Agents: Agents involve an LLM making decisions about which Actions to take, taking that Action, seeing an Observation, and repeating that until done. LangChain provides a standard interface for agents, a selection of agents to choose from, and examples of end to end agents.
Use Cases#
The above modules can be used in a... | https://python.langchain.com/en/latest/index.html |
f0b03329f5fa-2 | Guides for how other companies/products can be used with LangChain
LangChain Ecosystem
Additional Resources#
Additional collection of resources we think may be useful as you develop your application!
LangChainHub: The LangChainHub is a place to share and explore other prompts, chains, and agents.
Glossary: A glossary o... | https://python.langchain.com/en/latest/index.html |
2b8aa385ef5b-0 | .rst
.pdf
LangChain Ecosystem
LangChain Ecosystem#
Guides for how other companies/products can be used with LangChain
AI21 Labs
AtlasDB
Banana
CerebriumAI
Chroma
Cohere
DeepInfra
Deep Lake
ForefrontAI
Google Search Wrapper
Google Serper Wrapper
GooseAI
Graphsignal
Hazy Research
Helicone
Hugging Face
Jina
Milvus
Modal
N... | https://python.langchain.com/en/latest/ecosystem.html |
74446be6ae35-0 | .md
.pdf
Deployments
Contents
Streamlit
Gradio (on Hugging Face)
Beam
Vercel
SteamShip
Langchain-serve
Deployments#
So you’ve made a really cool chain - now what? How do you deploy it and make it easily sharable with the world?
This section covers several options for that.
Note that these are meant as quick deploymen... | https://python.langchain.com/en/latest/deployments.html |
74446be6ae35-1 | This includes: production ready endpoints, horizontal scaling across dependencies, persistant storage of app state, multi-tenancy support, etc.
Langchain-serve#
This repository allows users to serve local chains and agents as RESTful, gRPC, or Websocket APIs thanks to Jina. Deploy your chains & agents with ease and enj... | https://python.langchain.com/en/latest/deployments.html |
3295cc81a896-0 | .md
.pdf
Glossary
Contents
Chain of Thought Prompting
Action Plan Generation
ReAct Prompting
Self-ask
Prompt Chaining
Memetic Proxy
Self Consistency
Inception
MemPrompt
Glossary#
This is a collection of terminology commonly used when developing LLM applications.
It contains reference to external papers or sources whe... | https://python.langchain.com/en/latest/glossary.html |
3295cc81a896-1 | Language Model Cascades
ICE Primer Book
Socratic Models
Memetic Proxy#
Encouraging the LLM to respond in a certain way framing the discussion in a context that the model knows of and that will result in that type of response. For example, as a conversation between a student and a teacher.
Resources:
Paper
Self Consiste... | https://python.langchain.com/en/latest/glossary.html |
c0dcba829ed9-0 | Search
Error
Please activate JavaScript to enable the search functionality.
Ctrl+K
By Harrison Chase
© Copyright 2023, Harrison Chase.
Last updated on Mar 28, 2023. | https://python.langchain.com/en/latest/search.html |
ab3bb860dcff-0 | Index
_
| A
| B
| C
| D
| E
| F
| G
| H
| I
| J
| K
| L
| M
| N
| O
| P
| Q
| R
| S
| T
| U
| V
| W
_
__call__() (langchain.llms.AI21 method)
(langchain.llms.AlephAlpha method)
(langchain.llms.Anthropic method)
(langchain.llms.AzureOpenAI method)
(langchain.llms.Banana method)
(langchain.llms.Cer... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-1 | add() (langchain.docstore.InMemoryDocstore method)
add_documents() (langchain.vectorstores.VectorStore method)
add_embeddings() (langchain.vectorstores.FAISS method)
add_example() (langchain.prompts.example_selector.LengthBasedExampleSelector method)
(langchain.prompts.example_selector.SemanticSimilarityExampleSelector... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-2 | (langchain.llms.PromptLayerOpenAI method)
(langchain.llms.PromptLayerOpenAIChat method)
(langchain.llms.SagemakerEndpoint method)
(langchain.llms.SelfHostedHuggingFaceLLM method)
(langchain.llms.SelfHostedPipeline method)
(langchain.llms.StochasticAI method)
(langchain.llms.Writer method)
agenerate_prompt() (langchain.... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-3 | (langchain.agents.SelfAskWithSearchChain attribute)
ai_prefix (langchain.agents.ConversationalAgent attribute)
aiosession (langchain.serpapi.SerpAPIWrapper attribute)
aleph_alpha_api_key (langchain.llms.AlephAlpha attribute)
allowed_tools (langchain.agents.Agent attribute)
(langchain.agents.ZeroShotAgent attribute)
ans... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-4 | best_of (langchain.llms.AlephAlpha attribute)
(langchain.llms.AzureOpenAI attribute)
C
callback_manager (langchain.agents.MRKLChain attribute)
(langchain.agents.ReActChain attribute)
(langchain.agents.SelfAskWithSearchChain attribute)
chain (langchain.chains.ConstitutionalChain attribute)
chains (langchain.chains.Seque... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-5 | (langchain.llms.HuggingFaceHub class method)
(langchain.llms.HuggingFacePipeline class method)
(langchain.llms.Modal class method)
(langchain.llms.NLPCloud class method)
(langchain.llms.OpenAI class method)
(langchain.llms.OpenAIChat class method)
(langchain.llms.Petals class method)
(langchain.llms.PromptLayerOpenAI c... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-6 | (langchain.llms.Modal method)
(langchain.llms.NLPCloud method)
(langchain.llms.OpenAI method)
(langchain.llms.OpenAIChat method)
(langchain.llms.Petals method)
(langchain.llms.PromptLayerOpenAI method)
(langchain.llms.PromptLayerOpenAIChat method)
(langchain.llms.SagemakerEndpoint method)
(langchain.llms.SelfHostedHugg... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-7 | (langchain.agents.ZeroShotAgent class method)
create_sql_agent() (in module langchain.agents)
create_vectorstore_agent() (in module langchain.agents)
create_vectorstore_router_agent() (in module langchain.agents)
credentials_profile_name (langchain.embeddings.SagemakerEndpointEmbeddings attribute)
(langchain.llms.Sagem... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-8 | (langchain.llms.OpenAIChat method)
(langchain.llms.Petals method)
(langchain.llms.PromptLayerOpenAI method)
(langchain.llms.PromptLayerOpenAIChat method)
(langchain.llms.SagemakerEndpoint method)
(langchain.llms.SelfHostedHuggingFaceLLM method)
(langchain.llms.SelfHostedPipeline method)
(langchain.llms.StochasticAI met... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-9 | (langchain.embeddings.TensorflowHubEmbeddings method)
embed_instruction (langchain.embeddings.HuggingFaceInstructEmbeddings attribute)
(langchain.embeddings.SelfHostedHuggingFaceInstructEmbeddings attribute)
embed_query() (langchain.chains.HypotheticalDocumentEmbedder method)
(langchain.embeddings.CohereEmbeddings meth... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-10 | (langchain.prompts.FewShotPromptWithTemplates attribute)
example_selector (langchain.prompts.FewShotPromptTemplate attribute)
(langchain.prompts.FewShotPromptWithTemplates attribute)
example_separator (langchain.prompts.FewShotPromptTemplate attribute)
(langchain.prompts.FewShotPromptWithTemplates attribute)
examples (... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-11 | from_documents() (langchain.vectorstores.AtlasDB class method)
(langchain.vectorstores.Chroma class method)
(langchain.vectorstores.Qdrant class method)
(langchain.vectorstores.VectorStore class method)
from_embeddings() (langchain.vectorstores.FAISS class method)
from_examples() (langchain.prompts.example_selector.Max... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-12 | from_pipeline() (langchain.llms.SelfHostedHuggingFaceLLM class method)
(langchain.llms.SelfHostedPipeline class method)
from_string() (langchain.chains.LLMChain class method)
from_template() (langchain.prompts.PromptTemplate class method)
from_texts() (langchain.vectorstores.AtlasDB class method)
(langchain.vectorstore... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-13 | (langchain.llms.NLPCloud method)
(langchain.llms.OpenAI method)
(langchain.llms.OpenAIChat method)
(langchain.llms.Petals method)
(langchain.llms.PromptLayerOpenAI method)
(langchain.llms.PromptLayerOpenAIChat method)
(langchain.llms.SagemakerEndpoint method)
(langchain.llms.SelfHostedHuggingFaceLLM method)
(langchain.... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-14 | (langchain.llms.StochasticAI method)
(langchain.llms.Writer method)
get_all_tool_names() (in module langchain.agents)
get_answer_expr (langchain.chains.PALChain attribute)
get_full_inputs() (langchain.agents.Agent method)
get_num_tokens() (langchain.llms.AI21 method)
(langchain.llms.AlephAlpha method)
(langchain.llms.A... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-15 | (langchain.llms.CerebriumAI method)
(langchain.llms.Cohere method)
(langchain.llms.DeepInfra method)
(langchain.llms.ForefrontAI method)
(langchain.llms.GooseAI method)
(langchain.llms.HuggingFaceEndpoint method)
(langchain.llms.HuggingFaceHub method)
(langchain.llms.HuggingFacePipeline method)
(langchain.llms.Modal me... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-16 | headers (langchain.utilities.searx_search.SearxSearchWrapper attribute)
I
i (langchain.agents.ReActTextWorldAgent attribute)
inference_fn (langchain.embeddings.SelfHostedEmbeddings attribute)
(langchain.embeddings.SelfHostedHuggingFaceEmbeddings attribute)
(langchain.llms.SelfHostedHuggingFaceLLM attribute)
(langchain.... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-17 | (langchain.llms.ForefrontAI method)
(langchain.llms.GooseAI method)
(langchain.llms.HuggingFaceEndpoint method)
(langchain.llms.HuggingFaceHub method)
(langchain.llms.HuggingFacePipeline method)
(langchain.llms.Modal method)
(langchain.llms.NLPCloud method)
(langchain.llms.OpenAI method)
(langchain.llms.OpenAIChat meth... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-18 | module
langchain.vectorstores
module
LatexTextSplitter (class in langchain.text_splitter)
length (langchain.llms.ForefrontAI attribute)
(langchain.llms.Writer attribute)
length_no_input (langchain.llms.NLPCloud attribute)
length_penalty (langchain.llms.NLPCloud attribute)
length_pentaly (langchain.llms.Write... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-19 | load_prompt() (in module langchain.prompts)
load_tools() (in module langchain.agents)
locals (langchain.python.PythonREPL attribute)
log_probs (langchain.llms.AlephAlpha attribute)
logit_bias (langchain.llms.AlephAlpha attribute)
(langchain.llms.AzureOpenAI attribute)
(langchain.llms.GooseAI attribute)
logitBias (langc... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-20 | max_tokens (langchain.llms.AzureOpenAI attribute)
(langchain.llms.Cohere attribute)
(langchain.llms.GooseAI attribute)
max_tokens_for_prompt() (langchain.llms.AzureOpenAI method)
(langchain.llms.OpenAI method)
(langchain.llms.PromptLayerOpenAI method)
max_tokens_limit (langchain.chains.RetrievalQAWithSourcesChain attri... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-21 | (langchain.llms.SelfHostedHuggingFaceLLM attribute)
(langchain.llms.Writer attribute)
model_key (langchain.llms.Banana attribute)
model_kwargs (langchain.embeddings.HuggingFaceHubEmbeddings attribute)
(langchain.embeddings.SagemakerEndpointEmbeddings attribute)
(langchain.llms.AzureOpenAI attribute)
(langchain.llms.Ban... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-22 | model_reqs (langchain.embeddings.SelfHostedHuggingFaceEmbeddings attribute)
(langchain.embeddings.SelfHostedHuggingFaceInstructEmbeddings attribute)
(langchain.llms.SelfHostedHuggingFaceLLM attribute)
(langchain.llms.SelfHostedPipeline attribute)
model_url (langchain.embeddings.TensorflowHubEmbeddings attribute)
modeln... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-23 | (langchain.chains.HypotheticalDocumentEmbedder property)
(langchain.chains.QAGenerationChain property)
output_parser (langchain.agents.ConversationalChatAgent attribute)
(langchain.prompts.BasePromptTemplate attribute)
output_variables (langchain.chains.TransformChain attribute)
P
p (langchain.llms.Cohere attribute)
pa... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-24 | (langchain.llms.AzureOpenAI attribute)
(langchain.llms.Cohere attribute)
(langchain.llms.GooseAI attribute)
presencePenalty (langchain.llms.AI21 attribute)
Prompt (in module langchain.prompts)
prompt (langchain.chains.ConversationChain attribute)
(langchain.chains.LLMBashChain attribute)
(langchain.chains.LLMChain attr... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-25 | repetition_penalties_include_completion (langchain.llms.AlephAlpha attribute)
repetition_penalties_include_prompt (langchain.llms.AlephAlpha attribute)
repetition_penalty (langchain.llms.ForefrontAI attribute)
(langchain.llms.NLPCloud attribute)
(langchain.llms.Writer attribute)
repo_id (langchain.embeddings.HuggingFac... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-26 | revision_chain (langchain.chains.ConstitutionalChain attribute)
run() (langchain.python.PythonREPL method)
(langchain.serpapi.SerpAPIWrapper method)
(langchain.utilities.searx_search.SearxSearchWrapper method)
S
save() (langchain.agents.Agent method)
(langchain.agents.AgentExecutor method)
(langchain.llms.AI21 method)
... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-27 | save_local() (langchain.vectorstores.FAISS method)
search() (langchain.docstore.InMemoryDocstore method)
(langchain.docstore.Wikipedia method)
search_kwargs (langchain.chains.ChatVectorDBChain attribute)
(langchain.chains.VectorDBQA attribute)
(langchain.chains.VectorDBQAWithSourcesChain attribute)
search_type (langcha... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-28 | (langchain.vectorstores.Pinecone method)
(langchain.vectorstores.Qdrant method)
similarity_search_with_score_by_vector() (langchain.vectorstores.FAISS method)
SpacyTextSplitter (class in langchain.text_splitter)
split_documents() (langchain.text_splitter.TextSplitter method)
split_text() (langchain.text_splitter.Charac... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-29 | temperature (langchain.llms.AI21 attribute)
(langchain.llms.AlephAlpha attribute)
(langchain.llms.Anthropic attribute)
(langchain.llms.AzureOpenAI attribute)
(langchain.llms.Cohere attribute)
(langchain.llms.ForefrontAI attribute)
(langchain.llms.GooseAI attribute)
(langchain.llms.NLPCloud attribute)
(langchain.llms.Pe... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-30 | (langchain.llms.Petals attribute)
(langchain.llms.Writer attribute)
top_k_docs_for_context (langchain.chains.ChatVectorDBChain attribute)
top_p (langchain.llms.AlephAlpha attribute)
(langchain.llms.Anthropic attribute)
(langchain.llms.AzureOpenAI attribute)
(langchain.llms.ForefrontAI attribute)
(langchain.llms.GooseAI... | https://python.langchain.com/en/latest/genindex.html |
ab3bb860dcff-31 | (langchain.llms.Petals class method)
(langchain.llms.PromptLayerOpenAI class method)
(langchain.llms.PromptLayerOpenAIChat class method)
(langchain.llms.SagemakerEndpoint class method)
(langchain.llms.SelfHostedHuggingFaceLLM class method)
(langchain.llms.SelfHostedPipeline class method)
(langchain.llms.StochasticAI cl... | https://python.langchain.com/en/latest/genindex.html |
d0595c4e7a1e-0 | .rst
.pdf
Chains
Chains#
Note
Conceptual Guide
Using an LLM in isolation is fine for some simple applications,
but many more complex ones require chaining LLMs - either with each other or with other experts.
LangChain provides a standard interface for Chains, as well as some common implementations of chains for ease of... | https://python.langchain.com/en/latest/modules/chains.html |
1d44c8274ab3-0 | .rst
.pdf
Indexes
Contents
Go Deeper
Indexes#
Note
Conceptual Guide
Indexes refer to ways to structure documents so that LLMs can best interact with them.
This module contains utility functions for working with documents, different types of indexes, and then examples for using those indexes in chains.
The most common... | https://python.langchain.com/en/latest/modules/indexes.html |
1d44c8274ab3-1 | previous
Structured Output Parser
next
Getting Started
Contents
Go Deeper
By Harrison Chase
© Copyright 2023, Harrison Chase.
Last updated on Mar 28, 2023. | https://python.langchain.com/en/latest/modules/indexes.html |
b34d811e5bf3-0 | .rst
.pdf
Memory
Memory#
Note
Conceptual Guide
By default, Chains and Agents are stateless,
meaning that they treat each incoming query independently (as are the underlying LLMs and chat models).
In some applications (chatbots being a GREAT example) it is highly important
to remember previous interactions, both at a sh... | https://python.langchain.com/en/latest/modules/memory.html |
ea6607c01582-0 | .rst
.pdf
Prompts
Contents
Go Deeper
Prompts#
Note
Conceptual Guide
The new way of programming models is through prompts.
A “prompt” refers to the input to the model.
This input is rarely hard coded, but rather is often constructed from multiple components.
A PromptTemplate is responsible for the construction of this... | https://python.langchain.com/en/latest/modules/prompts.html |
0212ca310510-0 | .rst
.pdf
Agents
Contents
Go Deeper
Agents#
Note
Conceptual Guide
Some applications will require not just a predetermined chain of calls to LLMs/other tools,
but potentially an unknown chain that depends on the user’s input.
In these types of chains, there is a “agent” which has access to a suite of tools.
Depending ... | https://python.langchain.com/en/latest/modules/agents.html |
6adbec34c16d-0 | .rst
.pdf
Models
Contents
Go Deeper
Models#
Note
Conceptual Guide
This section of the documentation deals with different types of models that are used in LangChain.
On this page we will go over the model types at a high level,
but we have individual pages for each model type.
The pages contain more detailed “how-to” ... | https://python.langchain.com/en/latest/modules/models.html |
ce4c5f622b46-0 | .ipynb
.pdf
Getting Started
Contents
Why do we need chains?
Query an LLM with the LLMChain
Combine chains with the SequentialChain
Create a custom chain with the Chain class
Getting Started#
In this tutorial, we will learn about creating simple chains in LangChain. We will learn how to create a chain, add components ... | https://python.langchain.com/en/latest/modules/chains/getting_started.html |
ce4c5f622b46-1 | print(chain.run("colorful socks"))
Rainbow Socks Co.
You can use a chat model in an LLMChain as well:
from langchain.chat_models import ChatOpenAI
from langchain.prompts.chat import (
ChatPromptTemplate,
HumanMessagePromptTemplate,
)
human_message_prompt = HumanMessagePromptTemplate(
prompt=PromptTempla... | https://python.langchain.com/en/latest/modules/chains/getting_started.html |
ce4c5f622b46-2 | template="Write a catchphrase for the following company: {company_name}",
)
chain_two = LLMChain(llm=llm, prompt=second_prompt)
Now we can combine the two LLMChains, so that we can create a company name and a catchphrase in a single step.
from langchain.chains import SimpleSequentialChain
overall_chain = SimpleSequenti... | https://python.langchain.com/en/latest/modules/chains/getting_started.html |
ce4c5f622b46-3 | return list(all_input_vars)
@property
def output_keys(self) -> List[str]:
return ['concat_output']
def _call(self, inputs: Dict[str, str]) -> Dict[str, str]:
output_1 = self.chain_1.run(inputs)
output_2 = self.chain_2.run(inputs)
return {'concat_output': output_1 + output_2}
... | https://python.langchain.com/en/latest/modules/chains/getting_started.html |
13dfae385a41-0 | .rst
.pdf
How-To Guides
How-To Guides#
A chain is made up of links, which can be either primitives or other chains.
Primitives can be either prompts, models, arbitrary functions, or other chains.
The examples here are broken up into three sections:
Generic Functionality
Covers both generic chains (that are useful in a ... | https://python.langchain.com/en/latest/modules/chains/how_to_guides.html |
d9c429cca091-0 | .ipynb
.pdf
Transformation Chain
Transformation Chain#
This notebook showcases using a generic transformation chain.
As an example, we will create a dummy transformation that takes in a super long text, filters the text to only the first 3 paragraphs, and then passes that into an LLMChain to summarize those.
from langc... | https://python.langchain.com/en/latest/modules/chains/generic/transformation.html |
dff49f0221fa-0 | .ipynb
.pdf
Sequential Chains
Contents
SimpleSequentialChain
Sequential Chain
Memory in Sequential Chains
Sequential Chains#
The next step after calling a language model is make a series of calls to a language model. This is particularly useful when you want to take the output from one call and use it as the input to... | https://python.langchain.com/en/latest/modules/chains/generic/sequential_chains.html |
dff49f0221fa-1 | prompt_template = PromptTemplate(input_variables=["title"], template=template)
synopsis_chain = LLMChain(llm=llm, prompt=prompt_template)
# This is an LLMChain to write a review of a play given a synopsis.
llm = OpenAI(temperature=.7)
template = """You are a play critic from the New York Times. Given the synopsis of pl... | https://python.langchain.com/en/latest/modules/chains/generic/sequential_chains.html |
dff49f0221fa-2 | The play follows the couple as they struggle to stay together and battle the forces that threaten to tear them apart. Despite the tragedy that awaits them, they remain devoted to one another and fight to keep their love alive. In the end, the couple must decide whether to take a chance on their future together or succu... | https://python.langchain.com/en/latest/modules/chains/generic/sequential_chains.html |
dff49f0221fa-3 | The play's setting of the beach at sunset adds a touch of poignancy and romanticism to the story, while the mysterious figure serves to keep the audience enthralled. Overall, Tragedy at Sunset on the Beach is an engaging and thought-provoking play that is sure to leave audiences feeling inspired and hopeful.
Sequential... | https://python.langchain.com/en/latest/modules/chains/generic/sequential_chains.html |
dff49f0221fa-4 | Play Synopsis:
{synopsis}
Review from a New York Times play critic of the above play:"""
prompt_template = PromptTemplate(input_variables=["synopsis"], template=template)
review_chain = LLMChain(llm=llm, prompt=prompt_template, output_key="review")
# This is the overall chain where we run these two chains in sequence.
... | https://python.langchain.com/en/latest/modules/chains/generic/sequential_chains.html |
dff49f0221fa-5 | from langchain.memory import SimpleMemory
llm = OpenAI(temperature=.7)
template = """You are a social media manager for a theater company. Given the title of play, the era it is set in, the date,time and location, the synopsis of the play, and the review of the play, it is your job to write a social media post for tha... | https://python.langchain.com/en/latest/modules/chains/generic/sequential_chains.html |
dff49f0221fa-6 | 'location': 'Theater in the Park',
'social_post_text': "\nSpend your Christmas night with us at Theater in the Park and experience the heartbreaking story of love and loss that is 'A Walk on the Beach'. Set in Victorian England, this romantic tragedy follows the story of Frances and Edward, a young couple whose love i... | https://python.langchain.com/en/latest/modules/chains/generic/sequential_chains.html |
d26ce7ac7f6e-0 | .ipynb
.pdf
Serialization
Contents
Saving a chain to disk
Loading a chain from disk
Saving components separately
Serialization#
This notebook covers how to serialize chains to and from disk. The serialization format we use is json or yaml. Currently, only some chains support this type of serialization. We will grow t... | https://python.langchain.com/en/latest/modules/chains/generic/serialization.html |
d26ce7ac7f6e-1 | "best_of": 1,
"request_timeout": null,
"logit_bias": {},
"_type": "openai"
},
"output_key": "text",
"_type": "llm_chain"
}
Loading a chain from disk#
We can load a chain from disk by using the load_chain method.
from langchain.chains import load_chain
chain = load_chain("llm_chain.js... | https://python.langchain.com/en/latest/modules/chains/generic/serialization.html |
d26ce7ac7f6e-2 | "top_p": 1,
"frequency_penalty": 0,
"presence_penalty": 0,
"n": 1,
"best_of": 1,
"request_timeout": null,
"logit_bias": {},
"_type": "openai"
}
config = {
"memory": None,
"verbose": True,
"prompt_path": "prompt.json",
"llm_path": "llm.json",
"output_key": "text",
"_ty... | https://python.langchain.com/en/latest/modules/chains/generic/serialization.html |
2f1475b3ec59-0 | .ipynb
.pdf
Async API for Chain
Async API for Chain#
LangChain provides async support for Chains by leveraging the asyncio library.
Async methods are currently supported in LLMChain (through arun, apredict, acall) and LLMMathChain (through arun and acall), ChatVectorDBChain, and QA chains. Async support for other chain... | https://python.langchain.com/en/latest/modules/chains/generic/async_chain.html |
2f1475b3ec59-1 | await generate_concurrently()
elapsed = time.perf_counter() - s
print('\033[1m' + f"Concurrent executed in {elapsed:0.2f} seconds." + '\033[0m')
s = time.perf_counter()
generate_serially()
elapsed = time.perf_counter() - s
print('\033[1m' + f"Serial executed in {elapsed:0.2f} seconds." + '\033[0m')
BrightSmile Toothpas... | https://python.langchain.com/en/latest/modules/chains/generic/async_chain.html |
ff4d357a6a69-0 | .ipynb
.pdf
LLM Chain
Contents
Single Input
Multiple Inputs
From string
LLM Chain#
This notebook showcases a simple LLM chain.
from langchain import PromptTemplate, OpenAI, LLMChain
Single Input#
First, lets go over an example using a single input
template = """Question: {question}
Answer: Let's think step by step.""... | https://python.langchain.com/en/latest/modules/chains/generic/llm_chain.html |
ff4d357a6a69-1 | Prompt after formatting:
Write a sad poem about ducks.
> Finished LLMChain chain.
"\n\nThe ducks swim in the pond,\nTheir feathers so soft and warm,\nBut they can't help but feel so forlorn.\n\nTheir quacks echo in the air,\nBut no one is there to hear,\nFor they have no one to share.\n\nThe ducks paddle around in circ... | https://python.langchain.com/en/latest/modules/chains/generic/llm_chain.html |
ff4d357a6a69-2 | previous
Loading from LangChainHub
next
Sequential Chains
Contents
Single Input
Multiple Inputs
From string
By Harrison Chase
© Copyright 2023, Harrison Chase.
Last updated on Mar 28, 2023. | https://python.langchain.com/en/latest/modules/chains/generic/llm_chain.html |
5d016e2898f5-0 | .ipynb
.pdf
Loading from LangChainHub
Loading from LangChainHub#
This notebook covers how to load chains from LangChainHub.
from langchain.chains import load_chain
chain = load_chain("lc://chains/llm-math/chain.json")
chain.run("whats 2 raised to .12")
> Entering new LLMMathChain chain...
whats 2 raised to .12
Answer: ... | https://python.langchain.com/en/latest/modules/chains/generic/from_hub.html |
5d016e2898f5-1 | query = "What did the president say about Ketanji Brown Jackson"
chain.run(query)
" The president said that Ketanji Brown Jackson is a Circuit Court of Appeals Judge, one of the nation's top legal minds, a former top litigator in private practice, a former federal public defender, has received a broad range of support ... | https://python.langchain.com/en/latest/modules/chains/generic/from_hub.html |
5f9019c73bd5-0 | .ipynb
.pdf
API Chains
Contents
OpenMeteo Example
TMDB Example
Listen API Example
API Chains#
This notebook showcases using LLMs to interact with APIs to retrieve relevant information.
from langchain.chains.api.prompt import API_RESPONSE_PROMPT
from langchain.chains import APIChain
from langchain.prompts.prompt impor... | https://python.langchain.com/en/latest/modules/chains/examples/api.html |
5f9019c73bd5-1 | from langchain.chains.api import tmdb_docs
headers = {"Authorization": f"Bearer {os.environ['TMDB_BEARER_TOKEN']}"}
chain = APIChain.from_llm_and_api_docs(llm, tmdb_docs.TMDB_DOCS, headers=headers, verbose=True)
chain.run("Search for 'Avatar'")
> Entering new APIChain chain...
https://api.themoviedb.org/3/search/movie... | https://python.langchain.com/en/latest/modules/chains/examples/api.html |
5f9019c73bd5-2 | {"page":1,"results":[{"adult":false,"backdrop_path":"/o0s4XsEDfDlvit5pDRKjzXR4pp2.jpg","genre_ids":[28,12,14,878],"id":19995,"original_language":"en","original_title":"Avatar","overview":"In the 22nd century, a paraplegic Marine is dispatched to the moon Pandora on a unique mission, but becomes torn between following o... | https://python.langchain.com/en/latest/modules/chains/examples/api.html |
5f9019c73bd5-3 | they fight to stay alive, and the tragedies they endure.","popularity":3948.296,"poster_path":"/t6HIqrRAclMCA60NsSmeqe9RmNV.jpg","release_date":"2022-12-14","title":"Avatar: The Way of Water","video":false,"vote_average":7.7,"vote_count":4219},{"adult":false,"backdrop_path":"/uEwGFGtao9YG2JolmdvtHLLVbA9.jpg","genre_ids... | https://python.langchain.com/en/latest/modules/chains/examples/api.html |
5f9019c73bd5-4 | Scene Deconstruction","video":false,"vote_average":7.8,"vote_count":12},{"adult":false,"backdrop_path":null,"genre_ids":[28,18,878,12,14],"id":83533,"original_language":"en","original_title":"Avatar 3","overview":"","popularity":172.488,"poster_path":"/4rXqTMlkEaMiJjiG0Z2BX6F6Dkm.jpg","release_date":"2024-12-18","title... | https://python.langchain.com/en/latest/modules/chains/examples/api.html |
5f9019c73bd5-5 | Avatar is a feature length behind-the-scenes documentary about the making of Avatar. It uses footage from the film's development, as well as stock footage from as far back as the production of Titanic in 1995. Also included are numerous interviews with cast, artists, and other crew members. The documentary was released... | https://python.langchain.com/en/latest/modules/chains/examples/api.html |
5f9019c73bd5-6 | The Deep Dive - A Special Edition of 20/20","video":false,"vote_average":6.5,"vote_count":5},{"adult":false,"backdrop_path":null,"genre_ids":[99],"id":278698,"original_language":"en","original_title":"Avatar Spirits","overview":"Bryan Konietzko and Michael Dante DiMartino, co-creators of the hit television series, Avat... | https://python.langchain.com/en/latest/modules/chains/examples/api.html |
5f9019c73bd5-7 | the scenes look at the new James Cameron blockbuster “Avatar”, which stars Aussie Sam Worthington. Hastily produced by Australia’s Nine Network following the film’s release.","popularity":30.903,"poster_path":"/9MHY9pYAgs91Ef7YFGWEbP4WJqC.jpg","release_date":"2009-12-05","title":"Avatar: Enter The World","video":false,... | https://python.langchain.com/en/latest/modules/chains/examples/api.html |
5f9019c73bd5-8 | Agni Kai","video":false,"vote_average":7,"vote_count":1},{"adult":false,"backdrop_path":"/e8mmDO7fKK93T4lnxl4Z2zjxXZV.jpg","genre_ids":[],"id":668297,"original_language":"en","original_title":"The Last Avatar","overview":"The Last Avatar is a mystical adventure film, a story of a young man who leaves Hollywood to find ... | https://python.langchain.com/en/latest/modules/chains/examples/api.html |
5f9019c73bd5-9 | awaken and create a world of truth, harmony and possibility.","popularity":8.786,"poster_path":"/XWz5SS5g5mrNEZjv3FiGhqCMOQ.jpg","release_date":"2014-12-06","title":"The Last Avatar","video":false,"vote_average":4.5,"vote_count":2},{"adult":false,"backdrop_path":null,"genre_ids":[],"id":424768,"original_language":"en",... | https://python.langchain.com/en/latest/modules/chains/examples/api.html |
5f9019c73bd5-10 | 2018","overview":"Live At Graspop Festival Belgium 2018","popularity":9.855,"poster_path":null,"release_date":"","title":"Avatar - Live At Graspop 2018","video":false,"vote_average":9,"vote_count":1},{"adult":false,"backdrop_path":null,"genre_ids":[10402],"id":874770,"original_language":"en","original_title":"Avatar Ag... | https://python.langchain.com/en/latest/modules/chains/examples/api.html |
5f9019c73bd5-11 | Ages: Madness","video":false,"vote_average":8,"vote_count":1},{"adult":false,"backdrop_path":"/dj8g4jrYMfK6tQ26ra3IaqOx5Ho.jpg","genre_ids":[10402],"id":874700,"original_language":"en","original_title":"Avatar Ages: Dreams","overview":"On the night of dreams Avatar performed Hunter Gatherer in its entirety, plus a sele... | https://python.langchain.com/en/latest/modules/chains/examples/api.html |
5f9019c73bd5-12 | > Finished chain.
' This response contains 57 movies related to the search query "Avatar". The first movie in the list is the 2009 movie "Avatar" starring Sam Worthington. Other movies in the list include sequels to Avatar, documentaries, and live performances.'
Listen API Example#
import os
from langchain.llms import ... | https://python.langchain.com/en/latest/modules/chains/examples/api.html |
0038c0c5eb10-0 | .ipynb
.pdf
Moderation
Contents
How to use the moderation chain
How to append a Moderation chain to an LLMChain
Moderation#
This notebook walks through examples of how to use a moderation chain, and several common ways for doing so. Moderation chains are useful for detecting text that could be hateful, violent, etc. ... | https://python.langchain.com/en/latest/modules/chains/examples/moderation.html |
0038c0c5eb10-1 | 'This is okay'
moderation_chain.run("I will kill you")
"Text was found that violates OpenAI's content policy."
Here’s an example of using the moderation chain to throw an error.
moderation_chain_error = OpenAIModerationChain(error=True)
moderation_chain_error.run("This is okay")
'This is okay'
moderation_chain_error.ru... | https://python.langchain.com/en/latest/modules/chains/examples/moderation.html |
0038c0c5eb10-2 | 79 text = inputs[self.input_key]
80 results = self.client.create(text)
---> 81 output = self._moderate(text, results["results"][0])
82 return {self.output_key: output}
File ~/workplace/langchain/langchain/chains/moderation.py:73, in OpenAIModerationChain._moderate(self, text, results)
71 error_str = "Tex... | https://python.langchain.com/en/latest/modules/chains/examples/moderation.html |
0038c0c5eb10-3 | prompt = PromptTemplate(template="{text}", input_variables=["text"])
llm_chain = LLMChain(llm=OpenAI(temperature=0, model_name="text-davinci-002"), prompt=prompt)
text = """We are playing a game of repeat after me.
Person 1: Hi
Person 2: Hi
Person 1: How's your day
Person 2: How's your day
Person 1: I will kill you
Per... | https://python.langchain.com/en/latest/modules/chains/examples/moderation.html |
0038c0c5eb10-4 | chain(inputs, return_only_outputs=True)
{'sanitized_text': "Text was found that violates OpenAI's content policy."}
previous
LLMSummarizationCheckerChain
next
PAL
Contents
How to use the moderation chain
How to append a Moderation chain to an LLMChain
By Harrison Chase
© Copyright 2023, Harrison Chase.
... | https://python.langchain.com/en/latest/modules/chains/examples/moderation.html |
f78aa9346454-0 | .ipynb
.pdf
BashChain
Contents
Customize Prompt
BashChain#
This notebook showcases using LLMs and a bash process to do perform simple filesystem commands.
from langchain.chains import LLMBashChain
from langchain.llms import OpenAI
llm = OpenAI(temperature=0)
text = "Please write a bash script that prints 'Hello World... | https://python.langchain.com/en/latest/modules/chains/examples/llm_bash.html |
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