gistfile1.py

logger = None

def configure_loggging():
    global logger

    fmt = logging.Formatter(logging.BASIC_FORMAT)
    stream = logging.StreamHandler()
    stream.setLevel(logging.DEBUG)
    stream.setFormatter(fmt)

    level = logging.WARNING
    mem = logging.handlers.MemoryHandler(1024 * 10, level, target=stream)
    mem.setLevel(logging.DEBUG)

    root = logging.getLogger()
    root.setLevel(logging.DEBUG)
    root.addHandler(mem)

    logger = logging.getLogger(__name__)


def main():
    configure_loggging()

    logger.debug("debug message")
    print "234"
    logger.warn("warning")