format_messages() — langchain Function Reference

Architecture documentation for the format_messages() function in message.py from the langchain codebase.

Function python LangChainCore MessageInterface called by 1

Entity Profile

LangChainCore→ MessageInterface→ format_messages() — langchain Function Reference

Dependency Diagram

graph TD
  91c5681a_977d_f903_9d7c_e116fc6679f3["format_messages()"]
  dc7b97b4_cc8c_6ff7_fc8f_16fbbcf08799["BaseMessagePromptTemplate"]
  91c5681a_977d_f903_9d7c_e116fc6679f3 -->|defined in| dc7b97b4_cc8c_6ff7_fc8f_16fbbcf08799
  813e29e3_2e90_9d05_e533_6825e352d193["aformat_messages()"]
  813e29e3_2e90_9d05_e533_6825e352d193 -->|calls| 91c5681a_977d_f903_9d7c_e116fc6679f3
  style 91c5681a_977d_f903_9d7c_e116fc6679f3 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/prompts/message.py lines 34–44

    def format_messages(self, **kwargs: Any) -> list[BaseMessage]:
        """Format messages from kwargs.

        Should return a list of `BaseMessage` objects.

        Args:
            **kwargs: Keyword arguments to use for formatting.

        Returns:
            List of `BaseMessage` objects.
        """