init() — langchain Function Reference

Architecture documentation for the __init__() function in structured_output.py from the langchain codebase.

Function python LangChainCore Runnables

Entity Profile

LangChainCore→ Runnables→ __init__() — langchain Function Reference

Dependency Diagram

graph TD
  2808b469_8f34_bf25_a1fb_b0bdff43f594["__init__()"]
  401ad6d7_e124_f0bd_f962_febd376a0a8d["StructuredOutputValidationError"]
  2808b469_8f34_bf25_a1fb_b0bdff43f594 -->|defined in| 401ad6d7_e124_f0bd_f962_febd376a0a8d
  style 2808b469_8f34_bf25_a1fb_b0bdff43f594 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain_v1/langchain/agents/structured_output.py lines 63–74

    def __init__(self, tool_name: str, source: Exception, ai_message: AIMessage) -> None:
        """Initialize `StructuredOutputValidationError`.

        Args:
            tool_name: The name of the tool that failed.
            source: The exception that occurred.
            ai_message: The AI message that contained the invalid structured output.
        """
        self.tool_name = tool_name
        self.source = source
        self.ai_message = ai_message
        super().__init__(f"Failed to parse structured output for tool '{tool_name}': {source}.")