Logging variable data with new format string

Question

I use logging facility for python 2.7.3. Documentation for this Python version say:

the logging package pre-dates newer formatting options such as str

Answer 1

Try logging.setLogRecordFactory in Python 3.2+:

import collections
import logging


class _LogRecord(logging.LogRecord):

    def getMessage(self):
        msg = str(self.msg)
        if self.args:
            if isinstance(self.args, collections.Mapping):
                msg = msg.format(**self.args)
            else:
                msg = msg.format(*self.args)
        return msg


logging.setLogRecordFactory(_LogRecord)