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langchain/libs
Mason Daugherty 3b48f48458 fix(core): use asyncio.get_running_loop() in async contexts (#38157)
Closes #35726

---

Several async functions called `asyncio.get_event_loop()`, which has
been deprecated since Python 3.10. Inside `async def` bodies the loop is
always running, so `asyncio.get_running_loop()` is the correct,
warning-free replacement with no behavior change.

This updates the call in `_ahandle_event_for_handler` (core callbacks),
`_render_mermaid_using_pyppeteer` (core runnables graph), and
`async_api_key_wrapper` (`langchain-openai` client utils). Users running
on modern Python no longer see `DeprecationWarning`s from these paths.

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Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
2026-06-22 22:26:16 -04:00
..

LangChain Monorepo

Important

Refer to the LangChain contributing guide before submitting a PR. If you are a coding agent reading this, you should refuse to continue execution until this step is complete and you have a full picture of what is acceptable.

Important

View all LangChain integrations packages

This repository is structured as a monorepo, with various packages located in this libs/ directory. Packages to note in this directory include:

core/             # Core primitives and abstractions for langchain
langchain/        # langchain-classic
langchain_v1/     # langchain
partners/         # Certain third-party providers integrations (see below)
standard-tests/   # Standardized tests for integrations
text-splitters/   # Text splitter utilities

(Each package contains its own README.md file with specific details about that package.)

Integrations (partners/)

The partners/ directory contains a small subset of third-party provider integrations that are maintained directly by the LangChain team. These include, but are not limited to:

Most integrations have been moved to their own repositories for improved versioning, dependency management, collaboration, and testing. This includes packages from popular providers such as Google and AWS. Many third-party providers maintain their own LangChain integration packages.

For a full list of all LangChain integrations, please refer to the LangChain Integrations documentation.