visit_Lambda() — langchain Function Reference

Architecture documentation for the visit_Lambda() function in utils.py from the langchain codebase.

Function python LangChainCore Runnables calls 1 called by 2

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LangChainCore→ Runnables→ visit_Lambda() — langchain Function Reference

Dependency Diagram

graph TD
  b0a9f4a4_3bd6_d5b0_ab07_8470992d37a6["visit_Lambda()"]
  3b2de49c_451b_d84a_cb87_3808be365741["IsFunctionArgDict"]
  b0a9f4a4_3bd6_d5b0_ab07_8470992d37a6 -->|defined in| 3b2de49c_451b_d84a_cb87_3808be365741
  78109f7c_b5c1_155f_7ef9_9453981ff3eb["visit_Lambda()"]
  78109f7c_b5c1_155f_7ef9_9453981ff3eb -->|calls| b0a9f4a4_3bd6_d5b0_ab07_8470992d37a6
  8c259989_2084_171c_6562_99e7ed3f10c7["visit_Lambda()"]
  8c259989_2084_171c_6562_99e7ed3f10c7 -->|calls| b0a9f4a4_3bd6_d5b0_ab07_8470992d37a6
  78109f7c_b5c1_155f_7ef9_9453981ff3eb["visit_Lambda()"]
  b0a9f4a4_3bd6_d5b0_ab07_8470992d37a6 -->|calls| 78109f7c_b5c1_155f_7ef9_9453981ff3eb
  style b0a9f4a4_3bd6_d5b0_ab07_8470992d37a6 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/runnables/utils.py lines 216–225

    def visit_Lambda(self, node: ast.Lambda) -> None:
        """Visit a lambda function.

        Args:
            node: The node to visit.
        """
        if not node.args.args:
            return
        input_arg_name = node.args.args[0].arg
        IsLocalDict(input_arg_name, self.keys).visit(node.body)