How do I change the default format of log messages in python app engine?

Question

I would like to log the module and classname by default in log messages from my request handlers.

The usual way to do this seems to be to set a custom format string by c

Answer 1

I found this to be working for Python 3.6, it will set the logging level / format for all subsequent logging calls, even if logging is called by previous imports.

logging_level = logging.INFO
logging_fmt = "%(levelname)s:%(name)s:%(message)s"   # the default
try:
    root_logger = logging.getLogger()
    root_logger.setLevel(logging_level)
    root_handler = root_logger.handlers[0]
    root_handler.setFormatter(logging.Formatter(logging_fmt))
except IndexError:
    logging.basicConfig(level=logging_level, format=logging_fmt)