langchain

Commit Graph

Author	SHA1	Message	Date
Bagatur	e8a8286012	core[patch]: runnablewithchathistory from core.runnables (#23136 )	3 months ago
Vadym Barda	b483bf5095	core[minor]: handle boolean data in draw_mermaid (#23135 ) This change should address graph rendering issues for edges with boolean data Example from langgraph: ```python from typing import Annotated, TypedDict from langchain_core.messages import AnyMessage from langgraph.graph import END, START, StateGraph from langgraph.graph.message import add_messages class State(TypedDict): messages: Annotated[list[AnyMessage], add_messages] def branch(state: State) -> bool: return 1 + 1 == 3 graph_builder = StateGraph(State) graph_builder.add_node("foo", lambda state: {"messages": [("ai", "foo")]}) graph_builder.add_node("bar", lambda state: {"messages": [("ai", "bar")]}) graph_builder.add_conditional_edges( START, branch, path_map={True: "foo", False: "bar"}, then=END, ) app = graph_builder.compile() print(app.get_graph().draw_mermaid()) ``` Previous behavior: ```python AttributeError: 'bool' object has no attribute 'split' ``` Current behavior: ```python %%{init: {'flowchart': {'curve': 'linear'}}}%% graph TD; __start__[__start__]:::startclass; __end__[__end__]:::endclass; foo([foo]):::otherclass; bar([bar]):::otherclass; __start__ -. ('a',) .-> foo; foo --> __end__; __start__ -. ('b',) .-> bar; bar --> __end__; classDef startclass fill:#ffdfba; classDef endclass fill:#baffc9; classDef otherclass fill:#fad7de; ```	3 months ago
Bagatur	093ae04d58	core[patch]: Pin pydantic in py3.12.4 (#23130 )	3 months ago
Artem Mukhin	e271f75bee	docs: Fix URL formatting in deprecation warnings (#23075 ) Description Updated the URLs in deprecation warning messages. The URLs were previously written as raw strings and are now formatted to be clickable HTML links. Example of a broken link in the current API Reference: https://api.python.langchain.com/en/latest/chains/langchain.chains.openai_functions.extraction.create_extraction_chain_pydantic.html <img width="942" alt="Screenshot 2024-06-18 at 13 21 07" src="https://github.com/langchain-ai/langchain/assets/4854600/a1b1863c-cd03-4af2-a9bc-70375407fb00">	3 months ago
Eugene Yurtsev	aa6415aa7d	core[minor]: Support multiple keys in get_from_dict_or_env (#23086 ) Support passing multiple keys for ge_from_dict_or_env	3 months ago
Bagatur	01783d67fc	core[patch]: Release 0.2.9 (#23091 )	3 months ago
Eugene Yurtsev	5564d9e404	core[patch]: Document BaseStore (#23082 ) Add doc-string to BaseStore	3 months ago
Takuya Igei	9f791b6ad5	core[patch],community[patch],langchain[patch]: `tenacity` dependency to version `>=8.1.0,<8.4.0` (#22973 ) Fix https://github.com/langchain-ai/langchain/issues/22972. - [x] PR title: "package: description" - Where "package" is whichever of langchain, community, core, experimental, etc. is being modified. Use "docs: ..." for purely docs changes, "templates: ..." for template changes, "infra: ..." for CI changes. - Example: "community: add foobar LLM" - [x] PR message: *Delete this entire checklist* and replace with - Description: a description of the change - Issue: the issue # it fixes, if applicable - Dependencies: any dependencies required for this change - Twitter handle: if your PR gets announced, and you'd like a mention, we'll gladly shout you out! - [x] Add tests and docs: If you're adding a new integration, please include 1. a test for the integration, preferably unit tests that do not rely on network access, 2. an example notebook showing its use. It lives in `docs/docs/integrations` directory. - [x] Lint and test: Run `make format`, `make lint` and `make test` from the root of the package(s) you've modified. See contribution guidelines for more: https://python.langchain.com/docs/contributing/ Additional guidelines: - Make sure optional dependencies are imported within a function. - Please do not add dependencies to pyproject.toml files (even optional ones) unless they are required for unit tests. - Most PRs should not touch more than one package. - Changes should be backwards compatible. - If you are adding something to community, do not re-import it in langchain. If no one reviews your PR within a few days, please @-mention one of baskaryan, efriis, eyurtsev, ccurme, vbarda, hwchase17.	3 months ago
Nuno Campos	f01f12ce1e	Include "no escape" and "inverted section" mustache vars in Prompt.input_variables and Prompt.input_schema (#22981 )	3 months ago
Bagatur	c2b2e3266c	core[minor]: message transformer utils (#22752 )	3 months ago
Bagatur	8235bae48e	core[patch]: Release 0.2.8 (#23012 )	3 months ago
Nuno Campos	bd4b68cd54	core: run_in_executor: Wrap StopIteration in RuntimeError (#22997 ) - StopIteration can't be set on an asyncio.Future it raises a TypeError and leaves the Future pending forever so we need to convert it to a RuntimeError	3 months ago
Erick Friis	9ef15691d6	core: release 0.2.7 (#22917 )	3 months ago
Nuno Campos	338180f383	core: in astream_events v2 always await task even if already finished (#22916 ) - this ensures exceptions propagate to the caller	3 months ago
kiarina	8171efd07a	core[patch]: Fix FunctionCallbackHandler._on_tool_end (#22908 ) If the global `debug` flag is enabled, the agent will get the following error in `FunctionCallbackHandler._on_tool_end` at runtime. ``` Error in ConsoleCallbackHandler.on_tool_end callback: AttributeError("'list' object has no attribute 'strip'") ``` By calling str() before strip(), the error was avoided. This error can be seen at [debugging.ipynb](https://github.com/langchain-ai/langchain/blob/master/docs/docs/how_to/debugging.ipynb). - Issue: NA - Dependencies: NA - Twitter handle: https://x.com/kiarina37	3 months ago
Eugene Yurtsev	4a77a3ab19	core[patch]: fix validation of @deprecated decorator (#22513 ) This PR moves the validation of the decorator to a better place to avoid creating bugs while deprecating code. Prevent issues like this from arising: https://github.com/langchain-ai/langchain/issues/22510 we should replace with a linter at some point that just does static analysis	3 months ago
Erick Friis	7234fd0f51	core: release 0.2.6 (#22868 )	3 months ago
Jacob Lee	bcbb43480c	core[patch]: Treat type as a special field when merging lists (#22750 ) Should we even log a warning? At least for Anthropic, it's expected to get e.g. `text_block` followed by `text_delta`. @ccurme @baskaryan @efriis	3 months ago
Nuno Campos	bae82e966a	core: In astream_events v2 propagate cancel/break to the inner astream call (#22865 ) - previous behavior was for the inner astream to continue running with no interruption - also propagate break in core runnable methods	3 months ago
James Braza	45b394268c	core[patch]: allowing latest `packaging` versions (#22792 ) Allowing version 24 of https://github.com/pypa/packaging --------- Co-authored-by: Erick Friis <erick@langchain.dev>	3 months ago
Christophe Bornet	d04e899b56	ci: add testing with Python 3.12 (#22813 ) We need to use a different version of numpy for py3.8 and py3.12 in pyproject. And so do projects that use that Python version range and import langchain. - Twitter handle: _cbornet	3 months ago
Eugene Yurtsev	5dbbdcbf8e	core[patch]: Update remaining root_validators (#22829 ) This PR updates the remaining root_validators in core to either be explicit pre-init or post-init validators.	3 months ago
Eugene Yurtsev	74e705250f	core[patch]: update some root_validators (#22787 ) Update some of the @root_validators to be explicit pre=True or pre=False, skip_on_failure=True for pydantic 2 compatibility.	3 months ago
Erick Friis	2aaf86ddae	core: fix mustache falsy cases (#22747 )	3 months ago
Eugene Yurtsev	5a7eac191a	core[patch]: Add missing type annotations (#22756 ) Add missing type annotations. The missing type annotations will raise exceptions with pydantic 2.	3 months ago
Erick Friis	9e03864d64	core: add error message for non-structured llm to StructuredPrompt (#22684 ) previously was the blank `NotImplementedError` from `BaseLanguageModel.with_structured_output`	3 months ago
William FH	be79ce9336	[Core] Unified Enable/Disable Tracing (#22576 )	3 months ago
Erick Friis	a24a9c6427	multiple: get rid of pyproject extras (#22581 ) They cause `poetry lock` to take a ton of time, and `uv pip install` can resolve the constraints from these toml files in trivial time (addressing problem with #19153) This allows us to properly upgrade lockfile dependencies moving forward, which revealed some issues that were either fixed or type-ignored (see file comments)	3 months ago
Bagatur	4367e89c9a	core[patch]: Release 0.2.5 (#22642 )	3 months ago
Eugene Yurtsev	28f744c1f5	core[patch]: Correctly order parent ids in astream events (from root to immediate parent), add defensive check for cycles (#22637 ) This PR makes two changes: 1. Fixes the order of parent IDs to be from root to immediate parent 2. Adds a simple defensive check for cycles	3 months ago
Eugene Yurtsev	035a9c9609	core[minor]: Add parent_ids to astream_events API (#22563 ) Include a list of parent ids for each event in astream events.	3 months ago
Nicolas Nkiere	51005e2776	core[minor]: Add an async root listener and with_alisteners method (#22151 ) - [x] Adding AsyncRootListener: "langchain_core: Adding AsyncRootListener" - Description: Adding an AsyncBaseTracer, AsyncRootListener and `with_alistener` function. This is to enable binding async root listener to runnables. This currently only supported for sync listeners. - Issue: None - Dependencies: None - [x] Add tests and docs: Added units tests and example snippet code within the function description of `with_alistener` - [x] Lint and test: Run make format_diff, make lint_diff and make test	3 months ago
Christophe Bornet	12ddb4fc6f	core[patch]: Use explicit classes for InMemoryByteStore and InMemoryStore (#22608 ) The current implementation doesn't work well with type checking. Instead replace with class definition that correctly works with type checking.	3 months ago
andyjessen	cfed68e06f	docs: Fix description (#22611 ) This commit fixes the description of the hair_color field.	3 months ago
andyjessen	8b40428f58	docs: Fix typo (#22603 ) This commit changes minor typo in the field description.	3 months ago
Christophe Bornet	c34ad8c163	core[patch]: Improve VectorStore API doc (#22547 )	3 months ago
Christophe Bornet	8ba868d3b0	core[patch]: Add similarity_score_threshold to VectorStore search types (#22477 )	4 months ago
Eugene Yurtsev	9120cf5df2	core[patch]: Deduplicate of callback handlers in merge_configs (#22478 ) This PR adds deduplication of callback handlers in merge_configs. Fix for this issue: https://github.com/langchain-ai/langchain/issues/22227 The issue appears when the code is: 1) running python >=3.11 2) invokes a runnable from within a runnable 3) binds the callbacks to the child runnable from the parent runnable using with_config In this case, the same callbacks end up appearing twice: (1) the first time from with_config, (2) the second time with langchain automatically propagating them on behalf of the user. Prior to this PR this will emit duplicate events: ```python @tool async def get_items(question: str, callbacks: Callbacks): # <--- Accept callbacks """Ask question""" template = ChatPromptTemplate.from_messages( [ ( "human", "'{question}" ) ] ) chain = template \| chat_model.with_config( { "callbacks": callbacks, # <-- Propagate callbacks } ) return await chain.ainvoke({"question": question}) ``` Prior to this PR this will work work correctly (no duplicate events): ```python @tool async def get_items(question: str, callbacks: Callbacks): # <--- Accept callbacks """Ask question""" template = ChatPromptTemplate.from_messages( [ ( "human", "'{question}" ) ] ) chain = template \| chat_model return await chain.ainvoke({"question": question}, {"callbacks": callbacks}) ``` This will also work (as long as the user is using python >= 3.11) -- as langchain will automatically propagate callbacks ```python @tool async def get_items(question: str,): """Ask question""" template = ChatPromptTemplate.from_messages( [ ( "human", "'{question}" ) ] ) chain = template \| chat_model return await chain.ainvoke({"question": question}) ```	4 months ago
Bagatur	161b02a8be	core[patch]: Release 0.2.4 (#22489 )	4 months ago
ccurme	6db25b4e31	core[patch]: bump langsmith (#22476 ) Noticing errors logged in some situations when tracing with Langsmith: ```python from langchain_core.pydantic_v1 import BaseModel from langchain_anthropic import ChatAnthropic class AnswerWithJustification(BaseModel): """An answer to the user question along with justification for the answer.""" answer: str justification: str llm = ChatAnthropic(model="claude-3-haiku-20240307") structured_llm = llm.with_structured_output(AnswerWithJustification) list(structured_llm.stream("What weighs more a pound of bricks or a pound of feathers")) ``` ``` Error in LangChainTracer.on_chain_end callback: AttributeError("'NoneType' object has no attribute 'append'") [AnswerWithJustification(answer='A pound of bricks and a pound of feathers weigh the same amount.', justification='This is because a pound is a unit of mass, not volume. By definition, a pound of any material, whether bricks or feathers, will weigh the same - one pound. The physical size or volume of the materials does not matter when measuring by mass. So a pound of bricks and a pound of feathers both weigh exactly one pound.')] ```	4 months ago
Nuno Campos	58b118544e	Use immutable sequence type for batch/batch_as_completed types (#22433 ) Thank you for contributing to LangChain! - [ ] PR title: "package: description" - Where "package" is whichever of langchain, community, core, experimental, etc. is being modified. Use "docs: ..." for purely docs changes, "templates: ..." for template changes, "infra: ..." for CI changes. - Example: "community: add foobar LLM" - [ ] PR message: *Delete this entire checklist* and replace with - Description: a description of the change - Issue: the issue # it fixes, if applicable - Dependencies: any dependencies required for this change - Twitter handle: if your PR gets announced, and you'd like a mention, we'll gladly shout you out! - [ ] Add tests and docs: If you're adding a new integration, please include 1. a test for the integration, preferably unit tests that do not rely on network access, 2. an example notebook showing its use. It lives in `docs/docs/integrations` directory. - [ ] Lint and test: Run `make format`, `make lint` and `make test` from the root of the package(s) you've modified. See contribution guidelines for more: https://python.langchain.com/docs/contributing/ Additional guidelines: - Make sure optional dependencies are imported within a function. - Please do not add dependencies to pyproject.toml files (even optional ones) unless they are required for unit tests. - Most PRs should not touch more than one package. - Changes should be backwards compatible. - If you are adding something to community, do not re-import it in langchain. If no one reviews your PR within a few days, please @-mention one of baskaryan, efriis, eyurtsev, ccurme, vbarda, hwchase17.	4 months ago
Christophe Bornet	23bba18f92	core[patch]: Fix VectorStore's as_retriever mutating tags param (#22470 ) The current VectorStore `as_retriever` implementation mutates the `tags` param when it's passed in kwargs. This fix ensures that a copy is done.	4 months ago
Guangdong Liu	bc7e32f315	core(patch):fix partial_variables not working with SystemMessagePromptTemplate (#20711 ) - Issue: close #17560 - @baskaryan, @eyurtsev	4 months ago
Jacob Lee	c01467b1f4	core[patch]: RFC: Allow concatenation of messages with multi part content (#22002 ) Anthropic's streaming treats tool calls as different content parts (streamed back with a different index) from normal content in the `content`. This means that we need to update our chunk-merging logic to handle chunks with multi-part content. The alternative is coerceing Anthropic's responses into a string, but we generally like to preserve model provider responses faithfully when we can. This will also likely be useful for multimodal outputs in the future. This current PR does unfortunately make `index` a magic field within content parts, but Anthropic and OpenAI both use it at the moment to determine order anyway. To avoid cases where we have content arrays with holes and to simplify the logic, I've also restricted merging to chunks in order. TODO: tests CC @baskaryan @ccurme @efriis	4 months ago
Nuno Campos	ceb73ad06f	core: In BaseRetriever make get_relevant_docs delegate to invoke (#22434 ) - This fixes all the tracing issues with people still using get_relevant_docs, and a change we need for 0.3 anyway Thank you for contributing to LangChain! - [ ] PR title: "package: description" - Where "package" is whichever of langchain, community, core, experimental, etc. is being modified. Use "docs: ..." for purely docs changes, "templates: ..." for template changes, "infra: ..." for CI changes. - Example: "community: add foobar LLM" - [ ] PR message: *Delete this entire checklist* and replace with - Description: a description of the change - Issue: the issue # it fixes, if applicable - Dependencies: any dependencies required for this change - Twitter handle: if your PR gets announced, and you'd like a mention, we'll gladly shout you out! - [ ] Add tests and docs: If you're adding a new integration, please include 1. a test for the integration, preferably unit tests that do not rely on network access, 2. an example notebook showing its use. It lives in `docs/docs/integrations` directory. - [ ] Lint and test: Run `make format`, `make lint` and `make test` from the root of the package(s) you've modified. See contribution guidelines for more: https://python.langchain.com/docs/contributing/ Additional guidelines: - Make sure optional dependencies are imported within a function. - Please do not add dependencies to pyproject.toml files (even optional ones) unless they are required for unit tests. - Most PRs should not touch more than one package. - Changes should be backwards compatible. - If you are adding something to community, do not re-import it in langchain. If no one reviews your PR within a few days, please @-mention one of baskaryan, efriis, eyurtsev, ccurme, vbarda, hwchase17.	4 months ago
Nuno Campos	ed8e9c437a	core: In RunnableSequence pass kwargs to the first step (#22393 ) - This is a pattern that shows up occasionally in langgraph questions, people chain a graph to something else after, and want to pass the graph some kwargs (eg. stream_mode)	4 months ago
Bagatur	2b9f1469d8	core[patch]: Release 0.2.3 (#22329 )	4 months ago
Harrison Chase	ee32369265	core[patch]: fix runnable history and add docs (#22283 )	4 months ago
William FH	dcec133b85	[Core] Update Tracing Interops (#22318 ) LangSmith and LangChain context var handling evolved in parallel since originally we didn't expect people to want to interweave the decorator and langchain code. Once we get a new langsmith release, this PR will let you seemlessly hand off between @traceable context and runnable config context so you can arbitrarily nest code. It's expected that this fails right now until we get another release of the SDK	4 months ago
ccurme	e71b0b5827	core[patch]: Release 0.2.2 (#22289 )	4 months ago

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539 Commits (109a70fc64bdecac986f7d2725fbe99f33dc0db1)