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Overview Caches Callbacks Documents Document loaders Embeddings Exceptions Language models Serialization Output parsers Prompts Rate limiters Retrievers Runnables Utilities Vector stores

Language

Theme

Pythonlangchain-corerunnablesbaseRunnableSequencefirst

Attribute●Since v0.1

first

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first: Runnable[Input, Any]

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The first Runnable in the sequence.