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Run when chain starts running.
on_chain_start( self, serialized: dict[str, Any] | None, inputs: dict[str, Any] | Any, run_id: UUID | None = None, **kwargs: Any = {} ) -> CallbackManagerForChainRun
serialized
dict[str, Any] | None
The serialized chain.
inputs
dict[str, Any] | Any
The inputs to the chain.
run_id
UUID | None
None
The ID of the run.
**kwargs
Any
{}
Additional keyword arguments.
