2d8100c4fa
Fixes #35665 --- Fixes a regression introduced in #33035 where `Chain.save()` stopped working for chain types that support saving, including `LLMChain`. `Chain.save()` now calls `self.model_dump()`, but the `_type` injection still lived in the deprecated `dict()` override. As a result, serialized chains no longer included `_type`, and `save()` always raised the "does not support saving" error. This moves the override to `model_dump()` so saved chain output includes `_type` again. Pydantic v2's `dict()` method delegates to `model_dump()`, so existing `dict()` callers continue to get the same serialized shape.
🦜️🔗 LangChain Classic
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uv add langchain-classic
🤔 What is this?
Legacy chains, langchain-community re-exports, indexing API, deprecated functionality, and more.
In most cases, you should be using the main langchain package.
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