input_variables() — langchain Function Reference

Architecture documentation for the input_variables() function in chat.py from the langchain codebase.

Function python PromptManagement ChatTemplates calls 1 called by 1

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PromptManagement→ ChatTemplates→ input_variables() — langchain Function Reference

Dependency Diagram

graph TD
  38070047_2980_adb7_da5a_e41ca211b874["input_variables()"]
  894611e5_5039_7621_4673_821d0b9b6f17["_StringImageMessagePromptTemplate"]
  38070047_2980_adb7_da5a_e41ca211b874 -->|defined in| 894611e5_5039_7621_4673_821d0b9b6f17
  45230c2b_7a6d_5f8e_c2d6_80b39a0d02c4["input_variables()"]
  45230c2b_7a6d_5f8e_c2d6_80b39a0d02c4 -->|calls| 38070047_2980_adb7_da5a_e41ca211b874
  45230c2b_7a6d_5f8e_c2d6_80b39a0d02c4["input_variables()"]
  38070047_2980_adb7_da5a_e41ca211b874 -->|calls| 45230c2b_7a6d_5f8e_c2d6_80b39a0d02c4
  style 38070047_2980_adb7_da5a_e41ca211b874 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/prompts/chat.py lines 574–581

    def input_variables(self) -> list[str]:
        """Input variables for this prompt template.

        Returns:
            List of input variable names.
        """
        prompts = self.prompt if isinstance(self.prompt, list) else [self.prompt]
        return [iv for prompt in prompts for iv in prompt.input_variables]