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core: Cache RunnableLambda deps (#29200)

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`RunnableLambda`'s `deps` may do costly OS operation by calling
`get_function_nonlocals`.
So it's better to cache it.
See #29043
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Christophe Bornet 2025-01-23 19:09:07 +01:00 committed by GitHub
parent f795ab99ec
commit 618e550f06
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libs/core/langchain_core/runnables/base.py
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@ -4457,7 +4457,7 @@ class RunnableLambda(Runnable[Input, Output]):
module_name=module,
)
@property
@functools.cached_property
def deps(self) -> list[Runnable]:
"""The dependencies of this Runnable.