id stringlengths 14 16 | text stringlengths 29 2.73k | source stringlengths 49 117 |
|---|---|---|
307df7ddda7e-87 | (langchain.document_loaders.GoogleDriveLoader attribute)
tokenizer (langchain.llms.Petals attribute)
tokens (langchain.llms.AlephAlpha attribute)
tokens_path (langchain.llms.RWKV attribute)
TokenTextSplitter (class in langchain.text_splitter)
ToMarkdownLoader (class in langchain.document_loaders)
TomlLoader (class in l... | https://python.langchain.com/en/latest/genindex.html |
307df7ddda7e-88 | (langchain.utilities.GooglePlacesAPIWrapper attribute)
(langchain.utilities.WikipediaAPIWrapper attribute)
top_n (langchain.retrievers.document_compressors.CohereRerank attribute)
top_p (langchain.chat_models.ChatGooglePalm attribute)
(langchain.llms.AlephAlpha attribute)
(langchain.llms.Anthropic attribute)
(langchain... | https://python.langchain.com/en/latest/genindex.html |
307df7ddda7e-89 | type (langchain.utilities.GoogleSerperAPIWrapper attribute)
Typesense (class in langchain.vectorstores)
U
unsecure (langchain.utilities.searx_search.SearxSearchWrapper attribute)
(langchain.utilities.SearxSearchWrapper attribute)
UnstructuredAPIFileIOLoader (class in langchain.document_loaders)
UnstructuredAPIFileLoade... | https://python.langchain.com/en/latest/genindex.html |
307df7ddda7e-90 | (langchain.llms.Cohere class method)
(langchain.llms.CTransformers class method)
(langchain.llms.Databricks class method)
(langchain.llms.DeepInfra class method)
(langchain.llms.FakeListLLM class method)
(langchain.llms.ForefrontAI class method)
(langchain.llms.GooglePalm class method)
(langchain.llms.GooseAI class met... | https://python.langchain.com/en/latest/genindex.html |
307df7ddda7e-91 | (langchain.llms.VertexAI class method)
(langchain.llms.Writer class method)
upsert_messages() (langchain.memory.CosmosDBChatMessageHistory method)
url (langchain.document_loaders.MathpixPDFLoader property)
(langchain.llms.Beam attribute)
(langchain.retrievers.ChatGPTPluginRetriever attribute)
(langchain.retrievers.Remo... | https://python.langchain.com/en/latest/genindex.html |
307df7ddda7e-92 | (langchain.chains.VectorDBQAWithSourcesChain attribute)
(langchain.prompts.example_selector.SemanticSimilarityExampleSelector attribute)
(langchain.retrievers.SelfQueryRetriever attribute)
(langchain.retrievers.TimeWeightedVectorStoreRetriever attribute)
vectorstore_info (langchain.agents.agent_toolkits.VectorStoreTool... | https://python.langchain.com/en/latest/genindex.html |
307df7ddda7e-93 | (langchain.llms.OpenAIChat attribute)
(langchain.llms.OpenLM attribute)
(langchain.llms.Petals attribute)
(langchain.llms.PipelineAI attribute)
(langchain.llms.PredictionGuard attribute)
(langchain.llms.Replicate attribute)
(langchain.llms.RWKV attribute)
(langchain.llms.SagemakerEndpoint attribute)
(langchain.llms.Sel... | https://python.langchain.com/en/latest/genindex.html |
307df7ddda7e-94 | Wikipedia (class in langchain.docstore)
WikipediaLoader (class in langchain.document_loaders)
wolfram_alpha_appid (langchain.utilities.WolframAlphaAPIWrapper attribute)
writer_api_key (langchain.llms.Writer attribute)
writer_org_id (langchain.llms.Writer attribute)
Y
YoutubeLoader (class in langchain.document_loaders)
... | https://python.langchain.com/en/latest/genindex.html |
1f25b99c001c-0 | Search
Error
Please activate JavaScript to enable the search functionality.
Ctrl+K
By Harrison Chase
© Copyright 2023, Harrison Chase.
Last updated on May 29, 2023. | https://python.langchain.com/en/latest/search.html |
1cf15912e997-0 | .md
.pdf
Deployments
Contents
Streamlit
Gradio (on Hugging Face)
Chainlit
Beam
Vercel
FastAPI + Vercel
Kinsta
Fly.io
Digitalocean App Platform
Google Cloud Run
SteamShip
Langchain-serve
BentoML
Databutton
Deployments#
So, you’ve created a really cool chain - now what? How do you deploy it and make it easily shareable... | https://python.langchain.com/en/latest/ecosystem/deployments.html |
1cf15912e997-1 | Chainlit doc on the integration with LangChain
Beam#
This repo serves as a template for how deploy a LangChain with Beam.
It implements a Question Answering app and contains instructions for deploying the app as a serverless REST API.
Vercel#
A minimal example on how to run LangChain on Vercel using Flask.
FastAPI + Ve... | https://python.langchain.com/en/latest/ecosystem/deployments.html |
1cf15912e997-2 | Databutton#
These templates serve as examples of how to build, deploy, and share LangChain applications using Databutton. You can create user interfaces with Streamlit, automate tasks by scheduling Python code, and store files and data in the built-in store. Examples include a Chatbot interface with conversational memo... | https://python.langchain.com/en/latest/ecosystem/deployments.html |
e29953d4035a-0 | .md
.pdf
Locally Hosted Setup
Contents
Installation
Environment Setup
Locally Hosted Setup#
This page contains instructions for installing and then setting up the environment to use the locally hosted version of tracing.
Installation#
Ensure you have Docker installed (see Get Docker) and that it’s running.
Install th... | https://python.langchain.com/en/latest/tracing/local_installation.html |
e29953d4035a-1 | By Harrison Chase
© Copyright 2023, Harrison Chase.
Last updated on May 29, 2023. | https://python.langchain.com/en/latest/tracing/local_installation.html |
b974dda93ebd-0 | .md
.pdf
Cloud Hosted Setup
Contents
Installation
Environment Setup
Cloud Hosted Setup#
We offer a hosted version of tracing at langchainplus.vercel.app. You can use this to view traces from your run without having to run the server locally.
Note: we are currently only offering this to a limited number of users. The ... | https://python.langchain.com/en/latest/tracing/hosted_installation.html |
b974dda93ebd-1 | os.environ["LANGCHAIN_API_KEY"] = "my_api_key" # Don't commit this to your repo! Better to set it in your terminal.
Contents
Installation
Environment Setup
By Harrison Chase
© Copyright 2023, Harrison Chase.
Last updated on May 29, 2023. | https://python.langchain.com/en/latest/tracing/hosted_installation.html |
c90931d38bad-0 | .ipynb
.pdf
Tracing Walkthrough
Contents
[Beta] Tracing V2
Tracing Walkthrough#
There are two recommended ways to trace your LangChains:
Setting the LANGCHAIN_TRACING environment variable to “true”.
Using a context manager with tracing_enabled() to trace a particular block of code.
Note if the environment variable is... | https://python.langchain.com/en/latest/tracing/agent_with_tracing.html |
c90931d38bad-1 | > Entering new AgentExecutor chain...
I need to use a calculator to solve this.
Action: Calculator
Action Input: 2^.123243
Observation: Answer: 1.0891804557407723
Thought: I now know the final answer.
Final Answer: 1.0891804557407723
> Finished chain.
'1.0891804557407723'
# Agent run with tracing using a chat model
ag... | https://python.langchain.com/en/latest/tracing/agent_with_tracing.html |
c90931d38bad-2 | I need to use a calculator to solve this.
Action: Calculator
Action Input: 5 ^ .123243
Observation: Answer: 1.2193914912400514
Thought:I now know the answer to the question.
Final Answer: 1.2193914912400514
> Finished chain.
# Now, we unset the environment variable and use a context manager.
if "LANGCHAIN_TRACING" in ... | https://python.langchain.com/en/latest/tracing/agent_with_tracing.html |
c90931d38bad-3 | del os.environ["LANGCHAIN_TRACING"]
questions = [f"What is {i} raised to .123 power?" for i in range(1,4)]
# start a background task
task = asyncio.create_task(agent.arun(questions[0])) # this should not be traced
with tracing_enabled() as session:
assert session
tasks = [agent.arun(q) for q in questions[... | https://python.langchain.com/en/latest/tracing/agent_with_tracing.html |
c90931d38bad-4 | pip install --upgrade langchain
langchain plus start
Option 2 (Hosted):
After making an account an grabbing a LangChainPlus API Key, set the LANGCHAIN_ENDPOINT and LANGCHAIN_API_KEY environment variables
import os
os.environ["LANGCHAIN_TRACING_V2"] = "true"
# os.environ["LANGCHAIN_ENDPOINT"] = "https://langchainpro-api... | https://python.langchain.com/en/latest/tracing/agent_with_tracing.html |
c90931d38bad-5 | Contents
[Beta] Tracing V2
By Harrison Chase
© Copyright 2023, Harrison Chase.
Last updated on May 29, 2023. | https://python.langchain.com/en/latest/tracing/agent_with_tracing.html |
add7ed7a6800-0 | Source code for langchain.text_splitter
"""Functionality for splitting text."""
from __future__ import annotations
import copy
import logging
import re
from abc import ABC, abstractmethod
from typing import (
AbstractSet,
Any,
Callable,
Collection,
Iterable,
List,
Literal,
Optional,
... | https://python.langchain.com/en/latest/_modules/langchain/text_splitter.html |
add7ed7a6800-1 | keep_separator: bool = False,
):
"""Create a new TextSplitter.
Args:
chunk_size: Maximum size of chunks to return
chunk_overlap: Overlap in characters between chunks
length_function: Function that measures the length of given chunks
keep_separator: Whe... | https://python.langchain.com/en/latest/_modules/langchain/text_splitter.html |
add7ed7a6800-2 | return self.create_documents(texts, metadatas=metadatas)
def _join_docs(self, docs: List[str], separator: str) -> Optional[str]:
text = separator.join(docs)
text = text.strip()
if text == "":
return None
else:
return text
def _merge_splits(self, splits: It... | https://python.langchain.com/en/latest/_modules/langchain/text_splitter.html |
add7ed7a6800-3 | ):
total -= self._length_function(current_doc[0]) + (
separator_len if len(current_doc) > 1 else 0
)
current_doc = current_doc[1:]
current_doc.append(d)
total += _len + (separator_len if len(curre... | https://python.langchain.com/en/latest/_modules/langchain/text_splitter.html |
add7ed7a6800-4 | """Text splitter that uses tiktoken encoder to count length."""
try:
import tiktoken
except ImportError:
raise ImportError(
"Could not import tiktoken python package. "
"This is needed in order to calculate max_tokens_for_prompt. "
... | https://python.langchain.com/en/latest/_modules/langchain/text_splitter.html |
add7ed7a6800-5 | """Implementation of splitting text that looks at characters."""
def __init__(self, separator: str = "\n\n", **kwargs: Any):
"""Create a new TextSplitter."""
super().__init__(**kwargs)
self._separator = separator
[docs] def split_text(self, text: str) -> List[str]:
"""Split incomi... | https://python.langchain.com/en/latest/_modules/langchain/text_splitter.html |
add7ed7a6800-6 | self._tokenizer = enc
self._allowed_special = allowed_special
self._disallowed_special = disallowed_special
[docs] def split_text(self, text: str) -> List[str]:
"""Split incoming text and return chunks."""
splits = []
input_ids = self._tokenizer.encode(
text,
... | https://python.langchain.com/en/latest/_modules/langchain/text_splitter.html |
add7ed7a6800-7 | separator = separators[-1]
new_separators = None
for i, _s in enumerate(separators):
if _s == "":
separator = _s
break
if _s in text:
separator = _s
new_separators = separators[i + 1 :]
break
... | https://python.langchain.com/en/latest/_modules/langchain/text_splitter.html |
add7ed7a6800-8 | try:
from nltk.tokenize import sent_tokenize
self._tokenizer = sent_tokenize
except ImportError:
raise ImportError(
"NLTK is not installed, please install it with `pip install nltk`."
)
self._separator = separator
[docs] def split_text(s... | https://python.langchain.com/en/latest/_modules/langchain/text_splitter.html |
add7ed7a6800-9 | """Initialize a MarkdownTextSplitter."""
separators = [
# First, try to split along Markdown headings (starting with level 2)
"\n## ",
"\n### ",
"\n#### ",
"\n##### ",
"\n###### ",
# Note the alternative syntax for headings (bel... | https://python.langchain.com/en/latest/_modules/langchain/text_splitter.html |
add7ed7a6800-10 | "\n\\begin{quotation}",
"\n\\begin{verse}",
"\n\\begin{verbatim}",
## Now split by math environments
"\n\\begin{align}",
"$$",
"$",
# Now split by the normal type of lines
" ",
"",
]
super().__ini... | https://python.langchain.com/en/latest/_modules/langchain/text_splitter.html |
a091925fb243-0 | Source code for langchain.requests
"""Lightweight wrapper around requests library, with async support."""
from contextlib import asynccontextmanager
from typing import Any, AsyncGenerator, Dict, Optional
import aiohttp
import requests
from pydantic import BaseModel, Extra
class Requests(BaseModel):
"""Wrapper aroun... | https://python.langchain.com/en/latest/_modules/langchain/requests.html |
a091925fb243-1 | def delete(self, url: str, **kwargs: Any) -> requests.Response:
"""DELETE the URL and return the text."""
return requests.delete(url, headers=self.headers, **kwargs)
@asynccontextmanager
async def _arequest(
self, method: str, url: str, **kwargs: Any
) -> AsyncGenerator[aiohttp.Clien... | https://python.langchain.com/en/latest/_modules/langchain/requests.html |
a091925fb243-2 | """PATCH the URL and return the text asynchronously."""
async with self._arequest("PATCH", url, **kwargs) as response:
yield response
@asynccontextmanager
async def aput(
self, url: str, data: Dict[str, Any], **kwargs: Any
) -> AsyncGenerator[aiohttp.ClientResponse, None]:
... | https://python.langchain.com/en/latest/_modules/langchain/requests.html |
a091925fb243-3 | """POST to the URL and return the text."""
return self.requests.post(url, data, **kwargs).text
[docs] def patch(self, url: str, data: Dict[str, Any], **kwargs: Any) -> str:
"""PATCH the URL and return the text."""
return self.requests.patch(url, data, **kwargs).text
[docs] def put(self, ur... | https://python.langchain.com/en/latest/_modules/langchain/requests.html |
a091925fb243-4 | """PUT the URL and return the text asynchronously."""
async with self.requests.aput(url, **kwargs) as response:
return await response.text()
[docs] async def adelete(self, url: str, **kwargs: Any) -> str:
"""DELETE the URL and return the text asynchronously."""
async with self.req... | https://python.langchain.com/en/latest/_modules/langchain/requests.html |
b7ed90f7f811-0 | Source code for langchain.document_transformers
"""Transform documents"""
from typing import Any, Callable, List, Sequence
import numpy as np
from pydantic import BaseModel, Field
from langchain.embeddings.base import Embeddings
from langchain.math_utils import cosine_similarity
from langchain.schema import BaseDocumen... | https://python.langchain.com/en/latest/_modules/langchain/document_transformers.html |
b7ed90f7f811-1 | for first_idx, second_idx in redundant_stacked[redundant_sorted]:
if first_idx in included_idxs and second_idx in included_idxs:
# Default to dropping the second document of any highly similar pair.
included_idxs.remove(second_idx)
return list(sorted(included_idxs))
def _get_embeddin... | https://python.langchain.com/en/latest/_modules/langchain/document_transformers.html |
b7ed90f7f811-2 | """Filter down documents."""
stateful_documents = get_stateful_documents(documents)
embedded_documents = _get_embeddings_from_stateful_docs(
self.embeddings, stateful_documents
)
included_idxs = _filter_similar_embeddings(
embedded_documents, self.similarity_fn, s... | https://python.langchain.com/en/latest/_modules/langchain/document_transformers.html |
21f112892a2f-0 | Source code for langchain.experimental.autonomous_agents.baby_agi.baby_agi
"""BabyAGI agent."""
from collections import deque
from typing import Any, Dict, List, Optional
from pydantic import BaseModel, Field
from langchain.base_language import BaseLanguageModel
from langchain.callbacks.manager import CallbackManagerFo... | https://python.langchain.com/en/latest/_modules/langchain/experimental/autonomous_agents/baby_agi/baby_agi.html |
21f112892a2f-1 | print(str(t["task_id"]) + ": " + t["task_name"])
def print_next_task(self, task: Dict) -> None:
print("\033[92m\033[1m" + "\n*****NEXT TASK*****\n" + "\033[0m\033[0m")
print(str(task["task_id"]) + ": " + task["task_name"])
def print_task_result(self, result: str) -> None:
print("\033[93m... | https://python.langchain.com/en/latest/_modules/langchain/experimental/autonomous_agents/baby_agi/baby_agi.html |
21f112892a2f-2 | next_task_id = int(this_task_id) + 1
response = self.task_prioritization_chain.run(
task_names=", ".join(task_names),
next_task_id=str(next_task_id),
objective=objective,
)
new_tasks = response.split("\n")
prioritized_task_list = []
for task_st... | https://python.langchain.com/en/latest/_modules/langchain/experimental/autonomous_agents/baby_agi/baby_agi.html |
21f112892a2f-3 | """Run the agent."""
objective = inputs["objective"]
first_task = inputs.get("first_task", "Make a todo list")
self.add_task({"task_id": 1, "task_name": first_task})
num_iters = 0
while True:
if self.task_list:
self.print_task_list()
# ... | https://python.langchain.com/en/latest/_modules/langchain/experimental/autonomous_agents/baby_agi/baby_agi.html |
21f112892a2f-4 | break
return {}
[docs] @classmethod
def from_llm(
cls,
llm: BaseLanguageModel,
vectorstore: VectorStore,
verbose: bool = False,
task_execution_chain: Optional[Chain] = None,
**kwargs: Dict[str, Any],
) -> "BabyAGI":
"""Initialize the BabyAGI Con... | https://python.langchain.com/en/latest/_modules/langchain/experimental/autonomous_agents/baby_agi/baby_agi.html |
7d4201e1c1e8-0 | Source code for langchain.experimental.autonomous_agents.autogpt.agent
from __future__ import annotations
from typing import List, Optional
from pydantic import ValidationError
from langchain.chains.llm import LLMChain
from langchain.chat_models.base import BaseChatModel
from langchain.experimental.autonomous_agents.au... | https://python.langchain.com/en/latest/_modules/langchain/experimental/autonomous_agents/autogpt/agent.html |
7d4201e1c1e8-1 | ai_role: str,
memory: VectorStoreRetriever,
tools: List[BaseTool],
llm: BaseChatModel,
human_in_the_loop: bool = False,
output_parser: Optional[BaseAutoGPTOutputParser] = None,
) -> AutoGPT:
prompt = AutoGPTPrompt(
ai_name=ai_name,
ai_role=ai_r... | https://python.langchain.com/en/latest/_modules/langchain/experimental/autonomous_agents/autogpt/agent.html |
7d4201e1c1e8-2 | # Get command name and arguments
action = self.output_parser.parse(assistant_reply)
tools = {t.name: t for t in self.tools}
if action.name == FINISH_NAME:
return action.args["response"]
if action.name in tools:
tool = tools[action.name]
... | https://python.langchain.com/en/latest/_modules/langchain/experimental/autonomous_agents/autogpt/agent.html |
a68fd5f8a0e7-0 | Source code for langchain.experimental.generative_agents.generative_agent
import re
from datetime import datetime
from typing import Any, Dict, List, Optional, Tuple
from pydantic import BaseModel, Field
from langchain import LLMChain
from langchain.base_language import BaseLanguageModel
from langchain.experimental.gen... | https://python.langchain.com/en/latest/_modules/langchain/experimental/generative_agents/generative_agent.html |
a68fd5f8a0e7-1 | arbitrary_types_allowed = True
# LLM-related methods
@staticmethod
def _parse_list(text: str) -> List[str]:
"""Parse a newline-separated string into a list of strings."""
lines = re.split(r"\n", text.strip())
return [re.sub(r"^\s*\d+\.\s*", "", line).strip() for line in lines]
de... | https://python.langchain.com/en/latest/_modules/langchain/experimental/generative_agents/generative_agent.html |
a68fd5f8a0e7-2 | entity_action = self._get_entity_action(observation, entity_name)
q1 = f"What is the relationship between {self.name} and {entity_name}"
q2 = f"{entity_name} is {entity_action}"
return self.chain(prompt=prompt).run(q1=q1, queries=[q1, q2]).strip()
def _generate_reaction(
self, observ... | https://python.langchain.com/en/latest/_modules/langchain/experimental/generative_agents/generative_agent.html |
a68fd5f8a0e7-3 | )
consumed_tokens = self.llm.get_num_tokens(
prompt.format(most_recent_memories="", **kwargs)
)
kwargs[self.memory.most_recent_memories_token_key] = consumed_tokens
return self.chain(prompt=prompt).run(**kwargs).strip()
def _clean_response(self, text: str) -> str:
... | https://python.langchain.com/en/latest/_modules/langchain/experimental/generative_agents/generative_agent.html |
a68fd5f8a0e7-4 | if "SAY:" in result:
said_value = self._clean_response(result.split("SAY:")[-1])
return True, f"{self.name} said {said_value}"
else:
return False, result
[docs] def generate_dialogue_response(
self, observation: str, now: Optional[datetime] = None
) -> Tuple[bo... | https://python.langchain.com/en/latest/_modules/langchain/experimental/generative_agents/generative_agent.html |
a68fd5f8a0e7-5 | },
)
return True, f"{self.name} said {response_text}"
else:
return False, result
######################################################
# Agent stateful' summary methods. #
# Each dialog or response prompt includes a header #
# summarizing ... | https://python.langchain.com/en/latest/_modules/langchain/experimental/generative_agents/generative_agent.html |
a68fd5f8a0e7-6 | + f"\nInnate traits: {self.traits}"
+ f"\n{self.summary}"
)
[docs] def get_full_header(
self, force_refresh: bool = False, now: Optional[datetime] = None
) -> str:
"""Return a full header of the agent's status, summary, and current time."""
now = datetime.now() if now ... | https://python.langchain.com/en/latest/_modules/langchain/experimental/generative_agents/generative_agent.html |
f9f1a6970d21-0 | Source code for langchain.experimental.generative_agents.memory
import logging
import re
from datetime import datetime
from typing import Any, Dict, List, Optional
from langchain import LLMChain
from langchain.base_language import BaseLanguageModel
from langchain.prompts import PromptTemplate
from langchain.retrievers ... | https://python.langchain.com/en/latest/_modules/langchain/experimental/generative_agents/memory.html |
f9f1a6970d21-1 | # output keys
relevant_memories_key: str = "relevant_memories"
relevant_memories_simple_key: str = "relevant_memories_simple"
most_recent_memories_key: str = "most_recent_memories"
now_key: str = "now"
reflecting: bool = False
def chain(self, prompt: PromptTemplate) -> LLMChain:
return L... | https://python.langchain.com/en/latest/_modules/langchain/experimental/generative_agents/memory.html |
f9f1a6970d21-2 | ) -> List[str]:
"""Generate 'insights' on a topic of reflection, based on pertinent memories."""
prompt = PromptTemplate.from_template(
"Statements about {topic}\n"
+ "{related_statements}\n\n"
+ "What 5 high-level insights can you infer from the above statements?"
... | https://python.langchain.com/en/latest/_modules/langchain/experimental/generative_agents/memory.html |
f9f1a6970d21-3 | "On the scale of 1 to 10, where 1 is purely mundane"
+ " (e.g., brushing teeth, making bed) and 10 is"
+ " extremely poignant (e.g., a break up, college"
+ " acceptance), rate the likely poignancy of the"
+ " following piece of memory. Respond with a single integer."
... | https://python.langchain.com/en/latest/_modules/langchain/experimental/generative_agents/memory.html |
f9f1a6970d21-4 | and not self.reflecting
):
self.reflecting = True
self.pause_to_reflect(now=now)
# Hack to clear the importance from reflection
self.aggregate_importance = 0.0
self.reflecting = False
return result
[docs] def fetch_memories(
self, ob... | https://python.langchain.com/en/latest/_modules/langchain/experimental/generative_agents/memory.html |
f9f1a6970d21-5 | break
consumed_tokens += self.llm.get_num_tokens(doc.page_content)
if consumed_tokens < self.max_tokens_limit:
result.append(doc)
return self.format_memories_simple(result)
@property
def memory_variables(self) -> List[str]:
"""Input keys this memory class ... | https://python.langchain.com/en/latest/_modules/langchain/experimental/generative_agents/memory.html |
f9f1a6970d21-6 | [docs] def clear(self) -> None:
"""Clear memory contents."""
# TODO
By Harrison Chase
© Copyright 2023, Harrison Chase.
Last updated on May 29, 2023. | https://python.langchain.com/en/latest/_modules/langchain/experimental/generative_agents/memory.html |
50d1b2fb2c48-0 | Source code for langchain.retrievers.time_weighted_retriever
"""Retriever that combines embedding similarity with recency in retrieving values."""
import datetime
from copy import deepcopy
from typing import Any, Dict, List, Optional, Tuple
from pydantic import BaseModel, Field
from langchain.schema import BaseRetrieve... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/time_weighted_retriever.html |
50d1b2fb2c48-1 | """
class Config:
"""Configuration for this pydantic object."""
arbitrary_types_allowed = True
def _get_combined_score(
self,
document: Document,
vector_relevance: Optional[float],
current_time: datetime.datetime,
) -> float:
"""Return the combined sco... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/time_weighted_retriever.html |
50d1b2fb2c48-2 | for doc in self.memory_stream[-self.k :]
}
# If a doc is considered salient, update the salience score
docs_and_scores.update(self.get_salient_docs(query))
rescored_docs = [
(doc, self._get_combined_score(doc, relevance, current_time))
for doc, relevance in docs_a... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/time_weighted_retriever.html |
50d1b2fb2c48-3 | self.memory_stream.extend(dup_docs)
return self.vectorstore.add_documents(dup_docs, **kwargs)
[docs] async def aadd_documents(
self, documents: List[Document], **kwargs: Any
) -> List[str]:
"""Add documents to vectorstore."""
current_time = kwargs.get("current_time")
if cu... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/time_weighted_retriever.html |
8f87664f674d-0 | Source code for langchain.retrievers.pinecone_hybrid_search
"""Taken from: https://docs.pinecone.io/docs/hybrid-search"""
import hashlib
from typing import Any, Dict, List, Optional
from pydantic import BaseModel, Extra, root_validator
from langchain.embeddings.base import Embeddings
from langchain.schema import BaseRe... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/pinecone_hybrid_search.html |
8f87664f674d-1 | ]
# create dense vectors
dense_embeds = embeddings.embed_documents(context_batch)
# create sparse vectors
sparse_embeds = sparse_encoder.encode_documents(context_batch)
for s in sparse_embeds:
s["values"] = [float(s1) for s1 in s["values"]]
vectors = []
... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/pinecone_hybrid_search.html |
8f87664f674d-2 | """Validate that api key and python package exists in environment."""
try:
from pinecone_text.hybrid import hybrid_convex_scale # noqa:F401
from pinecone_text.sparse.base_sparse_encoder import (
BaseSparseEncoder, # noqa:F401
)
except ImportError:
... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/pinecone_hybrid_search.html |
d0615fb22631-0 | Source code for langchain.retrievers.vespa_retriever
"""Wrapper for retrieving documents from Vespa."""
from __future__ import annotations
import json
from typing import TYPE_CHECKING, Any, Dict, List, Literal, Optional, Sequence, Union
from langchain.schema import BaseRetriever, Document
if TYPE_CHECKING:
from ves... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/vespa_retriever.html |
d0615fb22631-1 | docs.append(Document(page_content=page_content, metadata=metadata))
return docs
[docs] def get_relevant_documents(self, query: str) -> List[Document]:
body = self._query_body.copy()
body["query"] = query
return self._query(body)
[docs] async def aget_relevant_documents(self, query:... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/vespa_retriever.html |
d0615fb22631-2 | document metadata. Defaults to empty tuple ().
sources (Sequence[str] or "*" or None): Sources to retrieve
from. Defaults to None.
_filter (Optional[str]): Document filter condition expressed in YQL.
Defaults to None.
yql (Optional[str]): Full YQL quer... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/vespa_retriever.html |
c3ba74937347-0 | Source code for langchain.retrievers.tfidf
"""TF-IDF Retriever.
Largely based on
https://github.com/asvskartheek/Text-Retrieval/blob/master/TF-IDF%20Search%20Engine%20(SKLEARN).ipynb"""
from __future__ import annotations
from typing import Any, Dict, Iterable, List, Optional
from pydantic import BaseModel
from langchai... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/tfidf.html |
c3ba74937347-1 | return cls(vectorizer=vectorizer, docs=docs, tfidf_array=tfidf_array, **kwargs)
[docs] @classmethod
def from_documents(
cls,
documents: Iterable[Document],
*,
tfidf_params: Optional[Dict[str, Any]] = None,
**kwargs: Any,
) -> TFIDFRetriever:
texts, metadatas = ... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/tfidf.html |
0e77ade5bea3-0 | Source code for langchain.retrievers.svm
"""SMV Retriever.
Largely based on
https://github.com/karpathy/randomfun/blob/master/knn_vs_svm.ipynb"""
from __future__ import annotations
import concurrent.futures
from typing import Any, List, Optional
import numpy as np
from pydantic import BaseModel
from langchain.embedding... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/svm.html |
0e77ade5bea3-1 | y[0] = 1
clf = svm.LinearSVC(
class_weight="balanced", verbose=False, max_iter=10000, tol=1e-6, C=0.1
)
clf.fit(x, y)
similarities = clf.decision_function(x)
sorted_ix = np.argsort(-similarities)
# svm.LinearSVC in scikit-learn is non-deterministic.
# ... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/svm.html |
19159140704d-0 | Source code for langchain.retrievers.wikipedia
from typing import List
from langchain.schema import BaseRetriever, Document
from langchain.utilities.wikipedia import WikipediaAPIWrapper
[docs]class WikipediaRetriever(BaseRetriever, WikipediaAPIWrapper):
"""
It is effectively a wrapper for WikipediaAPIWrapper.
... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/wikipedia.html |
71366c4575f1-0 | Source code for langchain.retrievers.azure_cognitive_search
"""Retriever wrapper for Azure Cognitive Search."""
from __future__ import annotations
import json
from typing import Dict, List, Optional
import aiohttp
import requests
from pydantic import BaseModel, Extra, root_validator
from langchain.schema import BaseRet... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/azure_cognitive_search.html |
71366c4575f1-1 | )
values["api_key"] = get_from_dict_or_env(
values, "api_key", "AZURE_COGNITIVE_SEARCH_API_KEY"
)
return values
def _build_search_url(self, query: str) -> str:
base_url = f"https://{self.service_name}.search.windows.net/"
endpoint_path = f"indexes/{self.index_name... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/azure_cognitive_search.html |
71366c4575f1-2 | search_results = self._search(query)
return [
Document(page_content=result.pop(self.content_key), metadata=result)
for result in search_results
]
[docs] async def aget_relevant_documents(self, query: str) -> List[Document]:
search_results = await self._asearch(query)
... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/azure_cognitive_search.html |
a722b5ae3d09-0 | Source code for langchain.retrievers.elastic_search_bm25
"""Wrapper around Elasticsearch vector database."""
from __future__ import annotations
import uuid
from typing import Any, Iterable, List
from langchain.docstore.document import Document
from langchain.schema import BaseRetriever
[docs]class ElasticSearchBM25Retr... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/elastic_search_bm25.html |
a722b5ae3d09-1 | self.index_name = index_name
[docs] @classmethod
def create(
cls, elasticsearch_url: str, index_name: str, k1: float = 2.0, b: float = 0.75
) -> ElasticSearchBM25Retriever:
from elasticsearch import Elasticsearch
# Create an Elasticsearch client instance
es = Elasticsearch(ela... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/elastic_search_bm25.html |
a722b5ae3d09-2 | raise ValueError(
"Could not import elasticsearch python package. "
"Please install it with `pip install elasticsearch`."
)
requests = []
ids = []
for i, text in enumerate(texts):
_id = str(uuid.uuid4())
request = {
... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/elastic_search_bm25.html |
3073c6efe973-0 | Source code for langchain.retrievers.knn
"""KNN Retriever.
Largely based on
https://github.com/karpathy/randomfun/blob/master/knn_vs_svm.ipynb"""
from __future__ import annotations
import concurrent.futures
from typing import Any, List, Optional
import numpy as np
from pydantic import BaseModel
from langchain.embedding... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/knn.html |
3073c6efe973-1 | similarities = index_embeds.dot(query_embeds)
sorted_ix = np.argsort(-similarities)
denominator = np.max(similarities) - np.min(similarities) + 1e-6
normalized_similarities = (similarities - np.min(similarities)) / denominator
top_k_results = []
for row in sorted_ix[0 : self.k]:
... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/knn.html |
0e868a3117d7-0 | Source code for langchain.retrievers.remote_retriever
from typing import List, Optional
import aiohttp
import requests
from pydantic import BaseModel
from langchain.schema import BaseRetriever, Document
[docs]class RemoteLangChainRetriever(BaseRetriever, BaseModel):
url: str
headers: Optional[dict] = None
i... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/remote_retriever.html |
689d0548c394-0 | Source code for langchain.retrievers.zep
from __future__ import annotations
from typing import TYPE_CHECKING, List, Optional
from langchain.schema import BaseRetriever, Document
if TYPE_CHECKING:
from zep_python import SearchResult
[docs]class ZepRetriever(BaseRetriever):
"""A Retriever implementation for the Z... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/zep.html |
689d0548c394-1 | )
for r in results
if r.message
]
[docs] def get_relevant_documents(self, query: str) -> List[Document]:
from zep_python import SearchPayload
payload: SearchPayload = SearchPayload(text=query)
results: List[SearchResult] = self.zep_client.search_memory(
... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/zep.html |
5e7c4f3eaed8-0 | Source code for langchain.retrievers.contextual_compression
"""Retriever that wraps a base retriever and filters the results."""
from typing import List
from pydantic import BaseModel, Extra
from langchain.retrievers.document_compressors.base import (
BaseDocumentCompressor,
)
from langchain.schema import BaseRetri... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/contextual_compression.html |
5e7c4f3eaed8-1 | return list(compressed_docs)
By Harrison Chase
© Copyright 2023, Harrison Chase.
Last updated on May 29, 2023. | https://python.langchain.com/en/latest/_modules/langchain/retrievers/contextual_compression.html |
16231b9cf5c8-0 | Source code for langchain.retrievers.weaviate_hybrid_search
"""Wrapper around weaviate vector database."""
from __future__ import annotations
from typing import Any, Dict, List, Optional
from uuid import uuid4
from pydantic import Extra
from langchain.docstore.document import Document
from langchain.schema import BaseR... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/weaviate_hybrid_search.html |
16231b9cf5c8-1 | "properties": [{"name": self._text_key, "dataType": ["text"]}],
"vectorizer": "text2vec-openai",
}
if not self._client.schema.exists(self._index_name):
self._client.schema.create_class(class_obj)
[docs] class Config:
"""Configuration for this pydantic object."""
... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/weaviate_hybrid_search.html |
16231b9cf5c8-2 | if "errors" in result:
raise ValueError(f"Error during query: {result['errors']}")
docs = []
for res in result["data"]["Get"][self._index_name]:
text = res.pop(self._text_key)
docs.append(Document(page_content=text, metadata=res))
return docs
[docs] async d... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/weaviate_hybrid_search.html |
f6177451b88e-0 | Source code for langchain.retrievers.databerry
from typing import List, Optional
import aiohttp
import requests
from langchain.schema import BaseRetriever, Document
[docs]class DataberryRetriever(BaseRetriever):
datastore_url: str
top_k: Optional[int]
api_key: Optional[str]
def __init__(
self,
... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/databerry.html |
f6177451b88e-1 | self.datastore_url,
json={
"query": query,
**({"topK": self.top_k} if self.top_k is not None else {}),
},
headers={
"Content-Type": "application/json",
**(
{"Authorizat... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/databerry.html |
c29c8ccadde2-0 | Source code for langchain.retrievers.chatgpt_plugin_retriever
from __future__ import annotations
from typing import List, Optional
import aiohttp
import requests
from pydantic import BaseModel
from langchain.schema import BaseRetriever, Document
[docs]class ChatGPTPluginRetriever(BaseRetriever, BaseModel):
url: str... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/chatgpt_plugin_retriever.html |
c29c8ccadde2-1 | docs = []
for d in results:
content = d.pop("text")
docs.append(Document(page_content=content, metadata=d))
return docs
def _create_request(self, query: str) -> tuple[str, dict, dict]:
url = f"{self.url}/query"
json = {
"queries": [
... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/chatgpt_plugin_retriever.html |
25eb49c57c72-0 | Source code for langchain.retrievers.arxiv
from typing import List
from langchain.schema import BaseRetriever, Document
from langchain.utilities.arxiv import ArxivAPIWrapper
[docs]class ArxivRetriever(BaseRetriever, ArxivAPIWrapper):
"""
It is effectively a wrapper for ArxivAPIWrapper.
It wraps load() to ge... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/arxiv.html |
f5f52d30581c-0 | Source code for langchain.retrievers.metal
from typing import Any, List, Optional
from langchain.schema import BaseRetriever, Document
[docs]class MetalRetriever(BaseRetriever):
def __init__(self, client: Any, params: Optional[dict] = None):
from metal_sdk.metal import Metal
if not isinstance(client... | https://python.langchain.com/en/latest/_modules/langchain/retrievers/metal.html |
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