Commit Graph

241 Commits (a8f530bc4d2692d0e1c3713643522751f85df51c)

Author SHA1 Message Date
William FH 38425c99d2
core[minor]: Image prompt template (#14263)
Builds on Bagatur's (#13227). See unit test for example usage (below)

```python
def test_chat_tmpl_from_messages_multipart_image() -> None:
    base64_image = "abcd123"
    other_base64_image = "abcd123"
    template = ChatPromptTemplate.from_messages(
        [
            ("system", "You are an AI assistant named {name}."),
            (
                "human",
                [
                    {"type": "text", "text": "What's in this image?"},
                    # OAI supports all these structures today
                    {
                        "type": "image_url",
                        "image_url": "data:image/jpeg;base64,{my_image}",
                    },
                    {
                        "type": "image_url",
                        "image_url": {"url": "data:image/jpeg;base64,{my_image}"},
                    },
                    {"type": "image_url", "image_url": "{my_other_image}"},
                    {
                        "type": "image_url",
                        "image_url": {"url": "{my_other_image}", "detail": "medium"},
                    },
                    {
                        "type": "image_url",
                        "image_url": {"url": "https://www.langchain.com/image.png"},
                    },
                    {
                        "type": "image_url",
                        "image_url": {"url": "data:image/jpeg;base64,foobar"},
                    },
                ],
            ),
        ]
    )
    messages = template.format_messages(
        name="R2D2", my_image=base64_image, my_other_image=other_base64_image
    )
    expected = [
        SystemMessage(content="You are an AI assistant named R2D2."),
        HumanMessage(
            content=[
                {"type": "text", "text": "What's in this image?"},
                {
                    "type": "image_url",
                    "image_url": {"url": f"data:image/jpeg;base64,{base64_image}"},
                },
                {
                    "type": "image_url",
                    "image_url": {
                        "url": f"data:image/jpeg;base64,{other_base64_image}"
                    },
                },
                {
                    "type": "image_url",
                    "image_url": {"url": f"{other_base64_image}"},
                },
                {
                    "type": "image_url",
                    "image_url": {
                        "url": f"{other_base64_image}",
                        "detail": "medium",
                    },
                },
                {
                    "type": "image_url",
                    "image_url": {"url": "https://www.langchain.com/image.png"},
                },
                {
                    "type": "image_url",
                    "image_url": {"url": "data:image/jpeg;base64,foobar"},
                },
            ]
        ),
    ]
    assert messages == expected
```

---------

Co-authored-by: Bagatur <baskaryan@gmail.com>
Co-authored-by: Brace Sproul <braceasproul@gmail.com>
5 months ago
Nuno Campos e86fd946c8
In stream_event and stream_log handle closed streams (#16661)
if eg. the stream iterator is interrupted then adding more events to the
send_stream will raise an exception that we should catch (and handle
where appropriate)

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5 months ago
Nuno Campos 52ccae3fb1
Accept message-like things in Chat models, LLMs and MessagesPlaceholder (#16418) 5 months ago
ccurme a989f82027
core: expand docstring for RunnableParallel (#16600)
- **Description:** expand docstring for RunnableParallel
  - **Issue:** https://github.com/langchain-ai/langchain/issues/16462

Feel free to modify this or let me know how it can be improved!
5 months ago
Eugene Yurtsev 42db96477f
docs: Update in code documentation for runnable with message history (#16585)
Update the in code documentation for Runnable With Message History
5 months ago
Bagatur 1e3ce338ca
core[patch]: Release 0.1.16 (#16589) 5 months ago
Bagatur ef42d9d559
core[patch], community[patch], openai[patch]: consolidate openai tool… (#16485)
… converters

One way to convert anything to an OAI function:
convert_to_openai_function
One way to convert anything to an OAI tool: convert_to_openai_tool
Corresponding bind functions on OAI models: bind_functions, bind_tools
5 months ago
Bagatur e510cfaa23
core[patch]: passthrough BaseRetriever.invoke(**kwargs) (#16551)
Fix for #16547
5 months ago
arnob-sengupta f9976b9630
core[patch]: consolidate conditional in BaseTool (#16530)
- **Description:** Refactor contradictory conditional to single line
  - **Issue:** #16528
5 months ago
Nuno Campos 3f38e1a457
Remove double line (#16426)
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5 months ago
Bagatur ef6a335570
core[patch]: Release 0.1.15 (#16473) 5 months ago
William FH 5de59f9236
Core[Patch] Parse tool input after on_start (#16430)
For tracing, if a validation error occurs, currently it is attributed to
the previous step of the chain. It would be nice to have the on_start
and on_error callbacks called for tools when there is a validation error
that occurs to more easily attribute the root-cause
5 months ago
Nuno Campos 226fe645f1
core[patch] Do not try to access attribute of None (#16321) 5 months ago
Chase VanSteenburg 1011b681dc
core[patch]: Fix f-string formatting in error message for configurable_fields (#16411)
- **Description:** Simple fix to f-string formatting. Allows more
informative ValueError output.
  - **Issue:** None needed.
  - **Dependencies:** None.
  - **Twitter handle:** @FlightP1an
5 months ago
James Braza d511366dd3
infra: absolute `EXAMPLE_DIR` path in core unit tests (#16325)
If you invoked testing from places besides `core/`, this `EXAMPLE_DIR`
path won't work. This PR makes`EXAMPLE_DIR` robust against invocation
location
5 months ago
Erick Friis cfe95ab085
multiple: update langsmith dep (#16407) 5 months ago
Piotr Mardziel 1b9001db47
core[patch]: preserve inspect.iscoroutinefunction with @deprecated decorator (#16295)
Adjusted `deprecate` decorator to make sure decorated async functions
are still recognized as "coroutinefunction" by `inspect`.

Before change, functions such as `LLMChain.acall` which are decorated as
deprecated are not recognized as coroutine functions. After the change,
they are recognized:

```python
import inspect
from langchain import LLMChain

# Is false before change but true after.
inspect.iscoroutinefunction(LLMChain.acall)
```
5 months ago
Bagatur 9cf0f5eb78
core[patch]: Release 0.1.14 (#16382) 5 months ago
Bagatur 1dc6c1ce06
core[patch], community[patch], langchain[patch], docs: Update SQL chains/agents/docs (#16168)
Revamp SQL use cases docs. In the process update SQL chains and agents.
5 months ago
James Braza e1c59779ad
core[patch]: Remove `print` statement on missing `grandalf` dependency in favor of more explicit ImportError (#16326)
After this PR an ImportError will be raised without a print if grandalf
is missing when using grandalf related code for printing runnable
graphs.
5 months ago
Nuno Campos 971a68d04f
Docs: Update README.md in core (#16329)
Docs: Update README.md in core
5 months ago
Eugene Yurtsev 89372fca22
core[patch]: Update sys info information (#16297)
Update information collected in sys info.

python -m langchain_core.sys_info     

System Information
------------------
> OS:  Linux
> OS Version: #14~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Mon Nov 20 18:15:30
UTC 2
> Python Version:  3.11.4 (main, Sep 25 2023, 10:06:23) [GCC 11.4.0]

Package Information
-------------------
> langchain_core: 0.1.10
> langchain: 0.1.0
> langchain_community: 0.0.11
> langchain_cli: 0.0.20
> langchain_experimental: 0.0.36
> langchain_openai: 0.0.2
> langchainhub: 0.1.14
> langserve: 0.0.19

Packages not installed (Not Necessarily a Problem)
--------------------------------------------------
The following packages were not found:

> langgraph
5 months ago
Nuno Campos ef75bb63ce
core[patch] Fix tracer output of streamed runs with non-addable output (#16324)
- Used to be None, now is just the last chunk

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6 months ago
Bagatur 1e29b676d5
core[patch]: simple fallback streaming (#16055) 6 months ago
Eugene Yurtsev 4ef0ed4ddc
astream_events: Add version parameter while method is in beta (#16290)
Add a version parameter while the method is in beta phase.

The idea is to make it possible to minimize making breaking changes for users while we're iterating on schema.

Once the API is stable we can assign a default version requirement.
6 months ago
Bagatur e3828bee43
core[patch]: Release 0.1.13 (#16287) 6 months ago
Bagatur 84bf5787a7
core[patch], openai[patch]: Chat openai stream logprobs (#16218) 6 months ago
Eugene Yurtsev 177af65dc4
core[minor]: RFC Add astream_events to Runnables (#16172)
This PR adds `astream_events` method to Runnables to make it easier to
stream data from arbitrary chains.

* Streaming only works properly in async right now
* One should use `astream()` with if mixing in imperative code as might
be done with tool implementations
* Astream_log has been modified with minimal additive changes, so no
breaking changes are expected
* Underlying callback code / tracing code should be refactored at some
point to handle things more consistently (OK for now)

- ~~[ ] verify event for on_retry~~ does not work until we implement
streaming for retry
- ~~[ ] Any rrenaming? Should we rename "event" to "hook"?~~
- [ ] Any other feedback from community?
- [x] throw NotImplementedError for `RunnableEach` for now

## Example

See this [Example
Notebook](dbbc7fa0d6/docs/docs/modules/agents/how_to/streaming_events.ipynb)
for an example with streaming in the context of an Agent

## Event Hooks Reference

Here is a reference table that shows some events that might be emitted
by the various Runnable objects.
Definitions for some of the Runnable are included after the table.


| event | name | chunk | input | output |

|----------------------|------------------|---------------------------------|-----------------------------------------------|-------------------------------------------------|
| on_chat_model_start | [model name] | | {"messages": [[SystemMessage,
HumanMessage]]} | |
| on_chat_model_stream | [model name] | AIMessageChunk(content="hello")
| | |
| on_chat_model_end | [model name] | | {"messages": [[SystemMessage,
HumanMessage]]} | {"generations": [...], "llm_output": None, ...} |
| on_llm_start | [model name] | | {'input': 'hello'} | |
| on_llm_stream | [model name] | 'Hello' | | |
| on_llm_end | [model name] | | 'Hello human!' |
| on_chain_start | format_docs | | | |
| on_chain_stream | format_docs | "hello world!, goodbye world!" | | |
| on_chain_end | format_docs | | [Document(...)] | "hello world!,
goodbye world!" |
| on_tool_start | some_tool | | {"x": 1, "y": "2"} | |
| on_tool_stream | some_tool | {"x": 1, "y": "2"} | | |
| on_tool_end | some_tool | | | {"x": 1, "y": "2"} |
| on_retriever_start | [retriever name] | | {"query": "hello"} | |
| on_retriever_chunk | [retriever name] | {documents: [...]} | | |
| on_retriever_end | [retriever name] | | {"query": "hello"} |
{documents: [...]} |
| on_prompt_start | [template_name] | | {"question": "hello"} | |
| on_prompt_end | [template_name] | | {"question": "hello"} |
ChatPromptValue(messages: [SystemMessage, ...]) |


Here are declarations associated with the events shown above:

`format_docs`:

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

format_docs = RunnableLambda(format_docs)
```

`some_tool`:

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

`prompt`:

```python
template = ChatPromptTemplate.from_messages(
    [("system", "You are Cat Agent 007"), ("human", "{question}")]
).with_config({"run_name": "my_template", "tags": ["my_template"]})
```
6 months ago
SN f175bf7d7b
Use env for revision id if not passed in as param; use `git describe` as backup (#16227)
Co-authored-by: William Fu-Hinthorn <13333726+hinthornw@users.noreply.github.com>
6 months ago
Eugene Yurtsev ecd4f0a7ec
core[patch]: testing add chat model for unit-tests (#16209)
This PR adds a fake chat model for testing purposes.

Used in this PR: https://github.com/langchain-ai/langchain/pull/16172
6 months ago
Nuno Campos ca014d5b04
Update readme (#16160)
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6 months ago
Bagatur 7ad9eba8f4
core[patch]: Release 0.1.12 (#16161) 6 months ago
Bagatur 5c73fd5bba
core[patch]: support old core namespaces (#16155) 6 months ago
Kapil Sachdeva f406dc3872
docs: in RunnableRetry, correct the example snippet that uses with_retry method on Runnable (#16108)
The example code snippet for with_retry is using incorrect argument
names. This PR fixes that
6 months ago
Leonid Kuligin 4df14a61fc
google-vertexai[minor]: add function calling on VertexAI (#15822)
Replace this entire comment with:
  - **Description:** Description: added support for tools on VertexAI
  - **Issue:** #15073 
  - **Twitter handle:**  lkuligin

---------

Co-authored-by: Erick Friis <erick@langchain.dev>
6 months ago
Bagatur 076593382a
core[patch]: Release 0.1.11 (#16100) 6 months ago
Bagatur c5656a4905
core[patch]: pass exceptions to fallbacks (#16048) 6 months ago
Bagatur bccb07f93e
core[patch]: simple prompt pretty printing (#15968) 6 months ago
Jonathan Algar a74f3a4979
Batch update of alt text and title attributes for images in md/mdx files across repo (#15357)
**Description:** Batch update of alt text and title attributes for
images in `md` & `mdx` files across the repo using
[alttexter](https://github.com/jonathanalgar/alttexter)/[alttexter-ghclient](https://github.com/jonathanalgar/alttexter-ghclient)
(built using LangChain/LangSmith).

**Limitation:** cannot update `ipynb` files because of [this
issue](https://github.com/langchain-ai/langchain/pull/15357#issuecomment-1885037250).
Can revisit when Docusaurus is bumped to v3.

I checked all the generated alt texts and titles and didn't find any
technical inaccuracies. That's not to say they're _perfect_, but a lot
better than what's there currently.


[Deployed](https://langchain-819yf1tbk-langchain.vercel.app/docs/modules/model_io/)
image example:


![chrome_yZQ7BF2GTj](https://github.com/langchain-ai/langchain/assets/93204286/43a9a4d4-70fd-41c4-8978-b6240ff63ffa)

You can see LangSmith traces for all the calls out to the LLM in the PRs
merged into this one:

* https://github.com/jonathanalgar/langchain/pull/6
* https://github.com/jonathanalgar/langchain/pull/4
* https://github.com/jonathanalgar/langchain/pull/3

I didn't add the following files to the PR as the images already have OK
alt texts:

*
27dca2d92f/docs/docs/integrations/providers/argilla.mdx (L3)
*
27dca2d92f/docs/docs/integrations/providers/apify.mdx (L11)

---------

Co-authored-by: github-actions <github-actions@github.com>
6 months ago
Harrison Chase 1afac77439
stop making copies of inputs (#15926) 6 months ago
Nuno Campos 112208baa5
Passthrough configurable primitive values as tracer metadata (#15915)
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6 months ago
Erick Friis 437cebc955
core[patch]: release 0.1.10 (#15911) 6 months ago
Harrison Chase 80d41a8da3
add old serializable mapping (#15906) 6 months ago
Erick Friis 33dccf0f66
core[patch]: release 0.1.9 (#15794) 6 months ago
Erick Friis 656e87beb9
core[patch]: add alternative_import to deprecated (#15781) 6 months ago
Eugene Yurtsev b508fcce65
core(minor): Add a way to print out system information for debugging purposes. (#15718)
To use: 

```bash
python -m langchain_core.sys_info
```
6 months ago
Bagatur 60f925d678
core[patch]: Release 0.1.8 (#15677) 6 months ago
Nuno Campos 7ce4cd0709
Do not issue beta or deprecation warnings on internal calls (#15641) 6 months ago
Nuno Campos ef22559f1f
Populate streamed_output for all runs handled by atransform_stream_with_config (#15599)
This means that users of astream_log() now get streamed output of
virtually all requested runs, whereas before the only streamed output
would be for the root run and raw llm runs

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Please title your PR "<package>: <description>", where <package> is
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6 months ago
Erick Friis b1fa726377
docs: langchain-openai (#15513)
Updates docs and cookbooks to import ChatOpenAI, OpenAI, and OpenAI
Embeddings from `langchain_openai`

There are likely more

---------

Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
6 months ago
Bagatur 46446a100d
core[patch]: deprecate v1 tracer (#15608) 6 months ago
Bagatur 96b47e18e0
core[patch]: Release 0.1.7 (#15610) 6 months ago
Erick Friis ebc75c5ca7
openai[minor]: implement langchain-openai package (#15503)
Todo

- [x] copy over integration tests
- [x] update docs with new instructions in #15513 
- [x] add linear ticket to bump core -> community, community->langchain,
and core->openai deps
- [ ] (optional): add `pip install langchain-openai` command to each
notebook using it
- [x] Update docstrings to not need `openai` install
- [x] Add serialization
- [x] deprecate old models

Contributor steps:

- [x] Add secret names to manual integrations workflow in
.github/workflows/_integration_test.yml
- [x] Add secrets to release workflow (for pre-release testing) in
.github/workflows/_release.yml

Maintainer steps (Contributors should not do these):

- [x] set up pypi and test pypi projects
- [x] add credential secrets to Github Actions
- [ ] add package to conda-forge


Functional changes to existing classes:

- now relies on openai client v1 (1.6.1) via concrete dep in
langchain-openai package

Codebase organization

- some function calling stuff moved to
`langchain_core.utils.function_calling` in order to be used in both
community and langchain-openai
6 months ago
Bagatur a7d023aaf0
core[patch], community[patch]: mark runnable context, lc load as beta (#15603) 6 months ago
Bagatur e1fc4d5b95
core[patch]: add beta decorator (#15589) 6 months ago
Bagatur 00dfbd2a99
core[minor], langchain[minor]: deprecate old Chain and LLM methods (#15499) 6 months ago
Eugene Yurtsev bf0b3cc0b5
core[patch]: Further restrict recursive URL loader (#15559)
Includes code from this PR:  https://github.com/langchain-ai/langchain/compare/HEAD...m0kr4n3:security/fix_ssrf 
with additional fixes 

Unit tests cover new test cases
6 months ago
Bagatur 817b84de9e
core[patch]: Release 0.1.6 (#15547) 6 months ago
Bagatur b2f15738dd
core[patch], langchain[patch], community[patch]: Revert #15326 (#15546) 6 months ago
Bagatur b317ad2472
core[patch]: Release 0.1.5 (#15480) 6 months ago
chyroc b65e57971e
Patch: improve type hint (#15451) 6 months ago
Li-Lun Lin cda68d717c
core[patch]: update LanguageModelInput from List to Sequence (#14405)
Co-authored-by: Erick Friis <erick@langchain.dev>
6 months ago
amaleki2 413a56b8f1
adding vectorstore_kwarg attribute to search_similarity function (#14604)
- **Description:** the ability to add all extra parameter of vectorstore
and using them SemanticSimilarityExampleSelector.
  - **Issue:** #14583
  - **Dependencies:** no dependensies
  - **Tag maintainer:** 
  - **Twitter handle:** @AmirMalekiz

---------

Co-authored-by: Amir Maleki <amaleki@fb.com>
Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
6 months ago
Antonio Pisani d4a98e4e04
core: update json output parser (#15079)
- **Description:** changed json.py to handle additional cases of partial
json string to be parsed, basically by dropping the last character in
the string until a valid json string is found or the string is empty.
Also added additional test cases.
  
- **Issue:** function parse_partial_json could not parse cases where the
key is present but the value is not.

---------

Co-authored-by: Nuno Campos <nuno@langchain.dev>
6 months ago
Dariusz Kajtoch 15b6c049d4
core:adds tests for partial_variables (#15427)
**Description:** Added small tests to test partial_variables in
PromptTemplate. It was missing.
6 months ago
Bagatur fa5d49f2c1
docs, experimental[patch], langchain[patch], community[patch]: update storage imports (#15429)
ran 
```bash
g grep -l "langchain.vectorstores" | xargs -L 1 sed -i '' "s/langchain\.vectorstores/langchain_community.vectorstores/g"
g grep -l "langchain.document_loaders" | xargs -L 1 sed -i '' "s/langchain\.document_loaders/langchain_community.document_loaders/g"
g grep -l "langchain.chat_loaders" | xargs -L 1 sed -i '' "s/langchain\.chat_loaders/langchain_community.chat_loaders/g"
g grep -l "langchain.document_transformers" | xargs -L 1 sed -i '' "s/langchain\.document_transformers/langchain_community.document_transformers/g"
g grep -l "langchain\.graphs" | xargs -L 1 sed -i '' "s/langchain\.graphs/langchain_community.graphs/g"
g grep -l "langchain\.memory\.chat_message_histories" | xargs -L 1 sed -i '' "s/langchain\.memory\.chat_message_histories/langchain_community.chat_message_histories/g"
gco master libs/langchain/tests/unit_tests/*/test_imports.py
gco master libs/langchain/tests/unit_tests/**/test_public_api.py
```
6 months ago
Harrison Chase a33d92306c
add get prompts method (#15425) 6 months ago
Nuno Campos 6810b4b0bc
Use tz-aware utc datetimes in tracer (#15187)
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6 months ago
Bagatur 480626dc99
docs, community[patch], experimental[patch], langchain[patch], cli[pa… (#15412)
…tch]: import models from community

ran
```bash
git grep -l 'from langchain\.chat_models' | xargs -L 1 sed -i '' "s/from\ langchain\.chat_models/from\ langchain_community.chat_models/g"
git grep -l 'from langchain\.llms' | xargs -L 1 sed -i '' "s/from\ langchain\.llms/from\ langchain_community.llms/g"
git grep -l 'from langchain\.embeddings' | xargs -L 1 sed -i '' "s/from\ langchain\.embeddings/from\ langchain_community.embeddings/g"
git checkout master libs/langchain/tests/unit_tests/llms
git checkout master libs/langchain/tests/unit_tests/chat_models
git checkout master libs/langchain/tests/unit_tests/embeddings/test_imports.py
make format
cd libs/langchain; make format
cd ../experimental; make format
cd ../core; make format
```
6 months ago
Nuno Campos 9cbf14dec2
Fetch runnable config from context var inside runnable lambda and runnable generator (#15334)
- easier to write custom logic/loops with automatic tracing
- if you don't want to streaming support write a regular function and
pass to RunnableLambda
- if you do want streaming write a generator and pass it to
RunnableGenerator

```py
import json
from typing import AsyncIterator

from langchain_core.messages import BaseMessage, FunctionMessage, HumanMessage
from langchain_core.agents import AgentAction, AgentFinish
from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder
from langchain_core.runnables import Runnable, RunnableGenerator, RunnablePassthrough
from langchain_core.tools import BaseTool

from langchain.agents.output_parsers import OpenAIFunctionsAgentOutputParser
from langchain.chat_models import ChatOpenAI
from langchain.tools.render import format_tool_to_openai_function


def _get_tavily():
    from langchain.tools.tavily_search import TavilySearchResults
    from langchain.utilities.tavily_search import TavilySearchAPIWrapper

    tavily_search = TavilySearchAPIWrapper()
    return TavilySearchResults(api_wrapper=tavily_search)


async def _agent_executor_generator(
    input: AsyncIterator[list[BaseMessage]],
    *,
    max_iterations: int = 10,
    tools: dict[str, BaseTool],
    agent: Runnable[list[BaseMessage], BaseMessage],
    parser: Runnable[BaseMessage, AgentAction | AgentFinish],
) -> AsyncIterator[BaseMessage]:
    messages = [m async for mm in input for m in mm]
    for _ in range(max_iterations):
        next_message = await agent.ainvoke(messages)
        yield next_message
        messages.append(next_message)

        parsed = await parser.ainvoke(next_message)
        if isinstance(parsed, AgentAction):
            result = await tools[parsed.tool].ainvoke(parsed.tool_input)
            next_message = FunctionMessage(name=parsed.tool, content=json.dumps(result))
            yield next_message
            messages.append(next_message)
        elif isinstance(parsed, AgentFinish):
            return


def get_agent_executor(tools: list[BaseTool], system_message: str):
    llm = ChatOpenAI(model="gpt-4-1106-preview", temperature=0, streaming=True)
    prompt = ChatPromptTemplate.from_messages(
        [
            ("system", system_message),
            MessagesPlaceholder(variable_name="messages"),
        ]
    )
    llm_with_tools = llm.bind(
        functions=[format_tool_to_openai_function(t) for t in tools]
    )

    agent = {"messages": RunnablePassthrough()} | prompt | llm_with_tools
    parser = OpenAIFunctionsAgentOutputParser()
    executor = RunnableGenerator(_agent_executor_generator)
    return executor.bind(
        tools={tool.name for tool in tools}, agent=agent, parser=parser
    )


agent = get_agent_executor([_get_tavily()], "You are a very nice agent!")


async def main():
    async for message in agent.astream(
        [HumanMessage(content="whats the weather in sf tomorrow?")]
    ):
        print(message)


if __name__ == "__main__":
    import asyncio

    asyncio.run(main())
```

results in this trace
https://smith.langchain.com/public/fa17f05d-9724-4d08-8fa1-750f8fcd051b/r
6 months ago
Bagatur 8e0d5813c2
langchain[patch], experimental[patch]: replace langchain.schema imports (#15410)
Import from core instead.

Ran:
```bash
git grep -l 'from langchain.schema\.output_parser' | xargs -L 1 sed -i '' "s/from\ langchain\.schema\.output_parser/from\ langchain_core.output_parsers/g"
git grep -l 'from langchain.schema\.messages' | xargs -L 1 sed -i '' "s/from\ langchain\.schema\.messages/from\ langchain_core.messages/g"
git grep -l 'from langchain.schema\.document' | xargs -L 1 sed -i '' "s/from\ langchain\.schema\.document/from\ langchain_core.documents/g"
git grep -l 'from langchain.schema\.runnable' | xargs -L 1 sed -i '' "s/from\ langchain\.schema\.runnable/from\ langchain_core.runnables/g"
git grep -l 'from langchain.schema\.vectorstore' | xargs -L 1 sed -i '' "s/from\ langchain\.schema\.vectorstore/from\ langchain_core.vectorstores/g"
git grep -l 'from langchain.schema\.language_model' | xargs -L 1 sed -i '' "s/from\ langchain\.schema\.language_model/from\ langchain_core.language_models/g"
git grep -l 'from langchain.schema\.embeddings' | xargs -L 1 sed -i '' "s/from\ langchain\.schema\.embeddings/from\ langchain_core.embeddings/g"
git grep -l 'from langchain.schema\.storage' | xargs -L 1 sed -i '' "s/from\ langchain\.schema\.storage/from\ langchain_core.stores/g"
git checkout master libs/langchain/tests/unit_tests/schema/
make format
cd libs/experimental
make format
cd ../langchain
make format
```
6 months ago
Ankush Gola f50dba12ff
Calculate trace_id and dotted_order client side (#15351)
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6 months ago
Paresh Chiramel 9be08a1956
Update _retrieve_ref inside json_schema.py to include an isdigit() check (#14745)
- **Description:** Update _retrieve_ref inside json_schema.py to include
an isdigit() check
- **Issue:** This library is used inside dereference_refs inside
langchain_community.agent_toolkits.openapi.spec. When I read in a yaml
file which has references for "400", "401" etc; the line "out =
out[component]" causes a KeyError. The isdigit() check ensures that if
it is an integer like "400" or "401"; it converts it into integer before
using it as a key to prevent the error.
  - **Dependencies:** No dependencies
  - **Tag maintainer:** @baskaryan

---------

Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
6 months ago
chyroc 0665a7da19
Docs: add param comment for `tracing_v2_enabled` (#15308)
Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
6 months ago
Nuno Campos b9636e5c98
Catch type errors in dumps/dumpd (#15336)
These can happen for edge cases not covered by `default` handler (eg.
"strange" keys in dicts)

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6 months ago
Nuno Campos 99000c612e
Propagate context vars in all classes/methods (#15329)
- Any direct usage of ThreadPoolExecutor or asyncio.run_in_executor
needs manual handling of context vars

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 -->
6 months ago
Ankush Gola 7eec8f2487
Delete V1 tracer and refactor tracer tests to core (#15326) 6 months ago
Nuno Campos 4e4b119614 Fix executor 6 months ago
chyroc 7ce338201c
Patch: improve check openai version (#15301) 6 months ago
Jon Nolen 27ee61645d
core: Update messages/__init__.py to account for AIMessageChunk which breaks message history runnable. (#15327)
- **Description:** fix parse issue for AIMessageChunk when using 
  - **Issue:** https://github.com/langchain-ai/langchain/issues/14511
  - **Dependencies:** none
  - **Twitter handle:** none

Taken from this fix:
https://github.com/gpt-engineer-org/gpt-engineer/issues/804#issuecomment-1769853850

Please make sure your PR is passing linting and testing before
submitting. Run `make format`, `make lint` and `make test` from the root
of the package you've modified to check this locally.

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tests, lint, etc: https://python.langchain.com/docs/contributing/

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.

If no one reviews your PR within a few days, please @-mention one of
@baskaryan, @eyurtsev, @hwchase17.

---------

Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
6 months ago
Nuno Campos f7313adf2a old py compat 6 months ago
Nuno Campos eb5e250188 Propagate context vars in all classes/methods
- Any direct usage of ThreadPoolExecutor or asyncio.run_in_executor needs manual handling of context vars
6 months ago
Harrison Chase c3b3b77a11
[core] add test for json parser (#15297)
this should fail, but isnt

---------

Co-authored-by: Nuno Campos <nuno@langchain.dev>
6 months ago
Nuno Campos ec090745a6
Improve markdown list parser (#15295)
- do not match text after - in the middle of a sentence

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6 months ago
Bagatur 80ceed6da5
core[patch]: Release 0.1.4 (#15319) 6 months ago
Nuno Campos 36ceffd2cd
Strip code block fences and extra test from xml when doing streaming … (#15293)
…parse

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6 months ago
joshy-deshaw bf5385592e
core, community: propagate context between threads (#15171)
While using `chain.batch`, the default implementation uses a
`ThreadPoolExecutor` and run the chains in separate threads. An issue
with this approach is that that [the token counting
callback](https://python.langchain.com/docs/modules/callbacks/token_counting)
fails to work as a consequence of the context not being propagated
between threads. This PR adds context propagation to the new threads and
adds some thread synchronization in the OpenAI callback. With this
change, the token counting callback works as intended.

Having the context propagation change would be highly beneficial for
those implementing custom callbacks for similar functionalities as well.

---------

Co-authored-by: Nuno Campos <nuno@langchain.dev>
6 months ago
Nuno Campos f74151b4e4
Make all json parsing less strict by default (#15287)
- Enables strict=False by default
- Uses partial json recovery logic by default

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6 months ago
Harrison Chase b86803153e
[core, langchain] modelio code improvements (#15277) 6 months ago
Nuno Campos 22b3a233b8
Update passthrough.py (#15252)
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6 months ago
chyroc 6fb3cc6f27
Fix: Use `Union` instead of `|` to improve compatibility, fix #15244 (#15245) 6 months ago
Nuno Campos 6a5a2fb9c8
Add .pick and .assign methods to Runnable (#15229)
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6 months ago
Nuno Campos 0252a24471
Implement nicer runnable seq constructor, Propagate name through Runn… (#15226)
…ableBinding

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 -->
6 months ago
Nuno Campos f36ef0739d
Add create_conv_retrieval_chain func (#15084)
```
                                                     +----------+
                                                     | MapInput |
                                                   **+----------+****
                                               ****                  ****
                                           ****                          ***
                                         **                                 ****
                  +------------------------------------+                        **
                  | Lambda(itemgetter('chat_history')) |                         *
                  +------------------------------------+                         *
                                     *                                           *
                                     *                                           *
                                     *                                           *
                       +---------------------------+            +--------------------------------+
                       | Lambda(_get_chat_history) |            | Lambda(itemgetter('question')) |
                       +---------------------------+            +--------------------------------+
                                     *                                           *
                                     *                                           *
                                     *                                           *
                      +----------------------------+                +------------------------+
                      | ContextSet('chat_history') |                | ContextSet('question') |
                      +----------------------------+                +------------------------+
                                               ****                  ****
                                                   ****          ****
                                                       **      **
                                                     +-----------+
                                                     | MapOutput |
                                                     +-----------+
                                                           *
                                                           *
                                                           *
                                                  +----------------+
                                                  | PromptTemplate |
                                                  +----------------+
                                                           *
                                                           *
                                                           *
                                                    +-------------+
                                                    | FakeListLLM |
                                                    +-------------+
                                                           *
                                                           *
                                                           *
                                                  +-----------------+
                                                  | StrOutputParser |
                                                  +-----------------+
                                                           *
                                                           *
                                                           *
                                            +----------------------------+
                                            | ContextSet('new_question') |
                                            +----------------------------+
                                                           *
                                                           *
                                                           *
                                                +---------------------+
                                                | SequentialRetriever |
                                                +---------------------+
                                                           *
                                                           *
                                                           *
                                        +------------------------------------+
                                        | Lambda(_reduce_tokens_below_limit) |
                                        +------------------------------------+
                                                           *
                                                           *
                                                           *
                                           +-------------------------------+
                                           | ContextSet('input_documents') |
                                           +-------------------------------+
                                                           *
                                                           *
                                                           *
                                                     +----------+
                                                  ***| MapInput |****
                                           *******   +----------+    ********
                                   ********                *                 *******
                            *******                         *                       ********
                        ****                                *                               ****
+-------------------------------+            +----------------------------+            +----------------------------+
| ContextGet('input_documents') |            | ContextGet('chat_history') |            | ContextGet('new_question') |
+-------------------------------+****        +----------------------------+            +----------------------------+
                                     *********                *                 *******
                                              ********         *          ******
                                                      *****    *      ****
                                                         +-----------+
                                                         | MapOutput |
                                                         +-----------+
                                                                *
                                                                *
                                                                *
                                                        +-------------+
                                                        | FakeListLLM |
                                                        +-------------+
                                                                *
                                                                *
                                                                *
                                                          +----------+
                                                       ***| MapInput |***
                                               ********   +----------+   ******
                                        *******                 *              *****
                                ********                        *                   ******
                            ****                                *                         ***
    +-------------------------------+            +----------------------------+            +-------------+
    | ContextGet('input_documents') |            | ContextGet('new_question') |          **| Passthrough |
    +-------------------------------+            +----------------------------+   *******  +-------------+
                                     *******                 *              ******
                                            ******           *       *******
                                                  ****      *    ****
                                                     +-----------+
                                                     | MapOutput |
                                                     +-----------+
```

---------

Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
6 months ago
Harrison Chase 4ad77f777e
[core] prompt changes (#15186)
change it to pass all variables through all the way in invoke
6 months ago
Nuno Campos ccf9c8e0be
Better input and output schemas for chains that start or end with a R… (#15185)
…unnableAssign or RunnablePick

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6 months ago
Nuno Campos 8cdc633465
Implement RunnablePassthrough.pick() (#15184)
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6 months ago
Quy Tang 7ef25a3c1b
Implement stream and astream for RunnableLambda (#14794)
**Description:** Implement stream and astream methods for RunnableLambda
to make streaming work for functions returning Runnable
  - **Issue:** https://github.com/langchain-ai/langchain/issues/11998
  - **Dependencies:** No new dependencies
  - **Twitter handle:** https://twitter.com/qtangs

---------

Co-authored-by: Nuno Campos <nuno@langchain.dev>
6 months ago
Nuno Campos 7e26559256
Fix runnable vistitor for funcs without pos args (#15182) 6 months ago
Harrison Chase b4a0d206d9
[core: minor] fix getters (#15181) 6 months ago