__post_init__() — langchain Function Reference

Architecture documentation for the __post_init__() function in _execution.py from the langchain codebase.

Function python LangChainCore Runnables

Entity Profile

LangChainCore→ Runnables→ __post_init__() — langchain Function Reference

Dependency Diagram

graph TD
  67f4d214_e3bb_d1b8_e7f8_0f36f4a3e6aa["__post_init__()"]
  489b9db3_8221_6964_1dd6_b6ee6fd2e645["HostExecutionPolicy"]
  67f4d214_e3bb_d1b8_e7f8_0f36f4a3e6aa -->|defined in| 489b9db3_8221_6964_1dd6_b6ee6fd2e645
  style 67f4d214_e3bb_d1b8_e7f8_0f36f4a3e6aa fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain_v1/langchain/agents/middleware/_execution.py lines 113–129

    def __post_init__(self) -> None:
        super().__post_init__()
        if self.cpu_time_seconds is not None and self.cpu_time_seconds <= 0:
            msg = "cpu_time_seconds must be positive if provided."
            raise ValueError(msg)
        if self.memory_bytes is not None and self.memory_bytes <= 0:
            msg = "memory_bytes must be positive if provided."
            raise ValueError(msg)
        self._limits_requested = any(
            value is not None for value in (self.cpu_time_seconds, self.memory_bytes)
        )
        if self._limits_requested and not _HAS_RESOURCE:
            msg = (
                "HostExecutionPolicy cpu/memory limits require the Python 'resource' module. "
                "Either remove the limits or run on a POSIX platform."
            )
            raise RuntimeError(msg)