input_variables() — langchain Function Reference

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

Function python LangChainCore LanguageModelBase calls 1 called by 2

Entity Profile

LangChainCore→ LanguageModelBase→ input_variables() — langchain Function Reference

Dependency Diagram

graph TD
  c98d374f_8d60_5244_5d19_d15116b202db["input_variables()"]
  59399935_0935_da66_1d5e_e32bc2809b62["BaseStringMessagePromptTemplate"]
  c98d374f_8d60_5244_5d19_d15116b202db -->|defined in| 59399935_0935_da66_1d5e_e32bc2809b62
  7bd744bd_e7ca_2373_1ab5_78fe4e5f4278["input_variables()"]
  7bd744bd_e7ca_2373_1ab5_78fe4e5f4278 -->|calls| c98d374f_8d60_5244_5d19_d15116b202db
  625653de_b2bf_6334_0586_bbfff3638ccb["input_variables()"]
  625653de_b2bf_6334_0586_bbfff3638ccb -->|calls| c98d374f_8d60_5244_5d19_d15116b202db
  625653de_b2bf_6334_0586_bbfff3638ccb["input_variables()"]
  c98d374f_8d60_5244_5d19_d15116b202db -->|calls| 625653de_b2bf_6334_0586_bbfff3638ccb
  style c98d374f_8d60_5244_5d19_d15116b202db fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/prompts/chat.py lines 329–335

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

        Returns:
            List of input variable names.
        """
        return self.prompt.input_variables