ReasoningJsonOutputParser Class — langchain Architecture

Architecture documentation for the ReasoningJsonOutputParser class in output_parsers.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  617f1d3c_0a13_7080_d8ee_1f0a677a61a0["ReasoningJsonOutputParser"]
  fb39b415_e8a2_9079_f7d1_646151c6e72c["JsonOutputParser"]
  617f1d3c_0a13_7080_d8ee_1f0a677a61a0 -->|extends| fb39b415_e8a2_9079_f7d1_646151c6e72c
  1be78f27_fe4d_35ef_90f6_0cba68eb107b["output_parsers.py"]
  617f1d3c_0a13_7080_d8ee_1f0a677a61a0 -->|defined in| 1be78f27_fe4d_35ef_90f6_0cba68eb107b
  226e3323_bb76_2676_e692_4e21f7ba7236["parse_result()"]
  617f1d3c_0a13_7080_d8ee_1f0a677a61a0 -->|method| 226e3323_bb76_2676_e692_4e21f7ba7236

Relationship Graph

Source Code

libs/partners/perplexity/langchain_perplexity/output_parsers.py lines 38–64

class ReasoningJsonOutputParser(JsonOutputParser):
    """A JSON output parser that strips reasoning tags before parsing.

    This parser removes any content enclosed in <think> tags from the input text
    before delegating to the parent JsonOutputParser for JSON parsing.

    """

    def parse_result(self, result: list[Generation], *, partial: bool = False) -> Any:
        """Parse the result of an LLM call to a JSON object.

        Args:
            result: The result of the LLM call.
            partial: Whether to parse partial JSON objects.
                If `True`, the output will be a JSON object containing
                all the keys that have been returned so far.
                If `False`, the output will be the full JSON object.

        Returns:
            The parsed JSON object.

        Raises:
            OutputParserException: If the output is not valid JSON.
        """
        text = result[0].text
        text = strip_think_tags(text)
        return super().parse_result([Generation(text=text)], partial=partial)