mget() — langchain Function Reference

Architecture documentation for the mget() function in file_system.py from the langchain codebase.

Function python LangChainCore ApiManagement calls 1

Entity Profile

LangChainCore→ ApiManagement→ mget() — langchain Function Reference

Dependency Diagram

graph TD
  2519266e_27f4_b661_fa43_c386b4c1ef32["mget()"]
  26189a3b_3a87_0b57_a7a3_341b06895b61["LocalFileStore"]
  2519266e_27f4_b661_fa43_c386b4c1ef32 -->|defined in| 26189a3b_3a87_0b57_a7a3_341b06895b61
  60db82b3_b672_7a32_40bd_32b87d30a271["_get_full_path()"]
  2519266e_27f4_b661_fa43_c386b4c1ef32 -->|calls| 60db82b3_b672_7a32_40bd_32b87d30a271
  style 2519266e_27f4_b661_fa43_c386b4c1ef32 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/langchain_classic/storage/file_system.py lines 104–125

    def mget(self, keys: Sequence[str]) -> list[bytes | None]:
        """Get the values associated with the given keys.

        Args:
            keys: A sequence of keys.

        Returns:
            A sequence of optional values associated with the keys.
            If a key is not found, the corresponding value will be `None`.
        """
        values: list[bytes | None] = []
        for key in keys:
            full_path = self._get_full_path(key)
            if full_path.exists():
                value = full_path.read_bytes()
                values.append(value)
                if self.update_atime:
                    # update access time only; preserve modified time
                    os.utime(full_path, (time.time(), full_path.stat().st_mtime))
            else:
                values.append(None)
        return values