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old_style_decorator() — langchain Function Reference

Architecture documentation for the old_style_decorator() function in test_middleware_backwards_compat.py from the langchain codebase.

Function python LangChainCore Runnables

Entity Profile

Dependency Diagram

graph TD
  25b54255_8998_c1f9_8271_b17284be1659["old_style_decorator()"]
  74d2d22f_07ae_c5bb_33c3_7da58e2da5a0["test_middleware_backwards_compat.py"]
  25b54255_8998_c1f9_8271_b17284be1659 -->|defined in| 74d2d22f_07ae_c5bb_33c3_7da58e2da5a0
  style 25b54255_8998_c1f9_8271_b17284be1659 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_backwards_compat.py lines 107–109

def old_style_decorator(state: AgentState[Any], runtime: Runtime[None]) -> dict[str, Any] | None:
    """Decorator middleware - old pattern."""
    return None

Domain

Subdomains

Defined In

Source

Frequently Asked Questions

What does old_style_decorator() do?
old_style_decorator() is a function in the langchain codebase, defined in libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_backwards_compat.py.
Where is old_style_decorator() defined?
old_style_decorator() is defined in libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_backwards_compat.py at line 107.

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