Dynamagically create logger levels and associated logging function

logger_magic.py

import logging

_func_prototype = "def {logger_func_name}(self, message, *args, **kwargs):\n" \
                  "    if self.isEnabledFor({levelname}):\n" \
                  "        self._log({levelname}, message, args, **kwargs)"

def _add_logger_level(levelname, level, *, func_name = None):
    """
    :type levelname: str
        The reference name of the level, e.g. DEBUG, WARNING, etc
    :type level: int
        Numeric logging level
    :type func_name: str
        The name of the logger function to log to a level, e.g. "info" for logger.info(...)
    """

    func_name = func_name or levelname.lower()

    setattr(logging, levelname, level)
    logging.addLevelName(level, levelname)

    exec(_func_prototype.format(logger_func_name=func_name, levelname=levelname), logging.__dict__, locals())
    setattr(logging.Logger, func_name, eval(func_name))

_add_logger_level('EVERYTHING', 1)
_add_logger_level('NOISY', 4, func_name='noise')