yield_keys() — langchain Function Reference

Architecture documentation for the yield_keys() function in stores.py from the langchain codebase.

Function python LangChainCore ApiManagement calls 1 called by 1

Entity Profile

LangChainCore→ ApiManagement→ yield_keys() — langchain Function Reference

Dependency Diagram

graph TD
  230cc8f7_3d41_cad0_26d1_a2124eeca404["yield_keys()"]
  56b372c7_b624_5ca7_090f_cbca197126c9["InMemoryBaseStore"]
  230cc8f7_3d41_cad0_26d1_a2124eeca404 -->|defined in| 56b372c7_b624_5ca7_090f_cbca197126c9
  71f3c37a_5c31_eb54_b796_d14b5b7fa05c["yield_keys()"]
  71f3c37a_5c31_eb54_b796_d14b5b7fa05c -->|calls| 230cc8f7_3d41_cad0_26d1_a2124eeca404
  71f3c37a_5c31_eb54_b796_d14b5b7fa05c["yield_keys()"]
  230cc8f7_3d41_cad0_26d1_a2124eeca404 -->|calls| 71f3c37a_5c31_eb54_b796_d14b5b7fa05c
  style 230cc8f7_3d41_cad0_26d1_a2124eeca404 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/stores.py lines 210–224

    def yield_keys(self, *, prefix: str | None = None) -> Iterator[str]:
        """Get an iterator over keys that match the given prefix.

        Args:
            prefix: The prefix to match.

        Yields:
            The keys that match the given prefix.
        """
        if prefix is None:
            yield from self.store.keys()
        else:
            for key in self.store:
                if key.startswith(prefix):
                    yield key