_replace_new_line() — langchain Function Reference

Architecture documentation for the _replace_new_line() function in json.py from the langchain codebase.

Function python Observability CallbackManager calls 1 called by 1

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Observability→ CallbackManager→ _replace_new_line() — langchain Function Reference

Dependency Diagram

graph TD
  38ec0623_4c04_9c75_1045_b54336f01990["_replace_new_line()"]
  20a5fe84_8249_f1df_53f0_7f22870f123f["json.py"]
  38ec0623_4c04_9c75_1045_b54336f01990 -->|defined in| 20a5fe84_8249_f1df_53f0_7f22870f123f
  38ec0623_4c04_9c75_1045_b54336f01990["_replace_new_line()"]
  38ec0623_4c04_9c75_1045_b54336f01990 -->|calls| 38ec0623_4c04_9c75_1045_b54336f01990
  38ec0623_4c04_9c75_1045_b54336f01990["_replace_new_line()"]
  38ec0623_4c04_9c75_1045_b54336f01990 -->|calls| 38ec0623_4c04_9c75_1045_b54336f01990
  style 38ec0623_4c04_9c75_1045_b54336f01990 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/utils/json.py lines 15–30

def _replace_new_line(match: re.Match[str]) -> str:
    """Replace newline characters in a regex match with escaped sequences.

    Args:
        match: Regex match object containing the string to process.

    Returns:
        String with newlines, carriage returns, tabs, and quotes properly escaped.
    """
    value = match.group(2)
    value = re.sub(r"\n", r"\\n", value)
    value = re.sub(r"\r", r"\\r", value)
    value = re.sub(r"\t", r"\\t", value)
    value = re.sub(r'(?<!\\)"', r"\"", value)

    return match.group(1) + value + match.group(3)