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before_model() — langchain Function Reference

Architecture documentation for the before_model() function in test_decorators.py from the langchain codebase.

Function python LangChainCore LanguageModelBase calls 1 called by 3

Entity Profile

Dependency Diagram

graph TD
  28fa7487_7074_9d90_d3ef_bb64640336d2["before_model()"]
  2a673bc4_c812_4e9d_63e5_01bca33ef5cf["SyncOnlyMiddleware"]
  28fa7487_7074_9d90_d3ef_bb64640336d2 -->|defined in| 2a673bc4_c812_4e9d_63e5_01bca33ef5cf
  68028dcd_ea5b_7d3a_0d75_c9ebd1cef92b["before_model()"]
  68028dcd_ea5b_7d3a_0d75_c9ebd1cef92b -->|calls| 28fa7487_7074_9d90_d3ef_bb64640336d2
  881ad216_36ed_8c49_dc40_40588d7f0164["test_get_can_jump_to_only_overridden_methods()"]
  881ad216_36ed_8c49_dc40_40588d7f0164 -->|calls| 28fa7487_7074_9d90_d3ef_bb64640336d2
  5c25d42d_8717_6afd_6929_7361aee18580["test_async_middleware_with_can_jump_to_graph_snapshot()"]
  5c25d42d_8717_6afd_6929_7361aee18580 -->|calls| 28fa7487_7074_9d90_d3ef_bb64640336d2
  68028dcd_ea5b_7d3a_0d75_c9ebd1cef92b["before_model()"]
  28fa7487_7074_9d90_d3ef_bb64640336d2 -->|calls| 68028dcd_ea5b_7d3a_0d75_c9ebd1cef92b
  style 28fa7487_7074_9d90_d3ef_bb64640336d2 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_decorators.py lines 530–533

        def before_model(
            self, state: AgentState[Any], runtime: Runtime[None]
        ) -> dict[str, Any] | None:
            return None

Domain

Subdomains

Defined In

Calls

Called By

Source

Frequently Asked Questions

What does before_model() do?
before_model() is a function in the langchain codebase, defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_decorators.py.
Where is before_model() defined?
before_model() is defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_decorators.py at line 530.
What does before_model() call?
before_model() calls 1 function(s): before_model.
What calls before_model()?
before_model() is called by 3 function(s): before_model, test_async_middleware_with_can_jump_to_graph_snapshot, test_get_can_jump_to_only_overridden_methods.

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