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openhands.core.logger

NoColorFormatter Objects​

class NoColorFormatter(logging.Formatter)

Formatter for non-colored logging in files.

strip_ansi​

def strip_ansi(s: str) -> str

Remove ANSI escape sequences (terminal color/formatting codes) from string.

Removes ANSI escape sequences from str, as defined by ECMA-048 in http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-048.pdf https://github.com/ewen-lbh/python-strip-ansi/blob/master/strip_ansi/__init__.py

RollingLogger Objects​

class RollingLogger()
def print_lines() -> None

Display the last n log_lines in the console (not for file logging).

This will create the effect of a rolling display in the console.

move_back​

def move_back(amount: int = -1) -> None

'\033[F' moves the cursor up one line.

replace_current_line​

def replace_current_line(line: str = '') -> None

'\033[2K\r' clears the line and moves the cursor to the beginning of the line.

get_console_handler​

def get_console_handler(
        log_level: int = logging.INFO) -> logging.StreamHandler

Returns a console handler for logging.

get_file_handler​

def get_file_handler(log_dir: str,
                     log_level: int = logging.INFO) -> logging.FileHandler

Returns a file handler for logging.

json_log_handler​

def json_log_handler(level: int = logging.INFO,
                     _out: TextIO = sys.stdout) -> logging.Handler

Configure logger instance for structured logging as json lines.

log_uncaught_exceptions​

def log_uncaught_exceptions(ex_cls: type[BaseException], ex: BaseException,
                            tb: TracebackType | None) -> Any

Logs uncaught exceptions along with the traceback.

Arguments:

  • ex_cls - The type of the exception.
  • ex - The exception instance.
  • tb - The traceback object.

Returns:

None

LlmFileHandler Objects​

class LlmFileHandler(logging.FileHandler)

LLM prompt and response logging.

__init__​

def __init__(filename: str,
             mode: str = 'a',
             encoding: str = 'utf-8',
             delay: bool = False) -> None

Initializes an instance of LlmFileHandler.

Arguments:

  • filename str - The name of the log file.
  • mode str, optional - The file mode. Defaults to 'a'.
  • encoding str, optional - The file encoding. Defaults to None.
  • delay bool, optional - Whether to delay file opening. Defaults to False.

emit​

def emit(record: logging.LogRecord) -> None

Emits a log record.

Arguments:

  • record logging.LogRecord - The log record to emit.

OpenHandsLoggerAdapter Objects​

class OpenHandsLoggerAdapter(logging.LoggerAdapter)

process​

def process(msg, kwargs)

If 'extra' is supplied in kwargs, merge it with the adapters 'extra' dict Starting in Python 3.13, LoggerAdapter's merge_extra option will do this.