How to generate a logger that logs to a string.

string_logger.py

import logging

def get_string_logger(logger_name, level=logging.INFO, format="%(asctime)s - %(name)s - %(levelname)s - %(message)s", debug_db=False):
    """
    Gets you what you need to log to a string. Returns a pair of StringIO, logger variables.

    >>> output, logger = get_string_logger('my_app_logger', level=logging.DEBUG)
    >>> call_stuff_to_debug_with_logger(logger=logger)
    >>> print output.getvalue()
    """
    import StringIO

    if not debug_db:
        from django.db.backends import BaseDatabaseWrapper
        from django.db.backends.util import CursorWrapper

        # Disable database debug: http://stackoverflow.com/questions/7768027/turn-off-sql-logging-while-keeping-settings-debug
        BaseDatabaseWrapper.make_debug_cursor = lambda self, cursor: CursorWrapper(cursor, self)

    logger = logging.getLogger(logger_name)
    logger.setLevel(logging.DEBUG)
    formatter = logging.Formatter(format)
    output = StringIO.StringIO()
    string_handler = logging.StreamHandler(output)
    string_handler.setFormatter(formatter)
    string_handler.setLevel(level)
    logger.addHandler(string_handler)

    return output, logger