get_graph() — langchain Function Reference

Architecture documentation for the get_graph() function in passthrough.py from the langchain codebase.

Function python LangChainCore Runnables

Entity Profile

LangChainCore→ Runnables→ get_graph() — langchain Function Reference

Dependency Diagram

graph TD
  36a5e337_52ae_1d0e_6a21_e4c27e785d4a["get_graph()"]
  e893b6ae_1c28_41f1_aa8b_a66d0f779312["RunnableAssign"]
  36a5e337_52ae_1d0e_6a21_e4c27e785d4a -->|defined in| e893b6ae_1c28_41f1_aa8b_a66d0f779312
  style 36a5e337_52ae_1d0e_6a21_e4c27e785d4a fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/runnables/passthrough.py lines 468–478

    def get_graph(self, config: RunnableConfig | None = None) -> Graph:
        # get graph from mapper
        graph = self.mapper.get_graph(config)
        # add passthrough node and edges
        input_node = graph.first_node()
        output_node = graph.last_node()
        if input_node is not None and output_node is not None:
            passthrough_node = graph.add_node(_graph_passthrough)
            graph.add_edge(input_node, passthrough_node)
            graph.add_edge(passthrough_node, output_node)
        return graph