handlers.py

#coding: utf-8

from logging.handlers import SMTPHandler as _SMTPHandler


class SMTPHandler(_SMTPHandler):

    def __init__(self, *args, **kwargs):
        super(SMTPHandler, self).__init__(*args, **kwargs)
        self._timeout = 15

logging.yaml

Logging:
    formatters:
        brief:
            format: "%(levelname)s <PID %(process)d:%(processName)s> %(name)s %(message)s"
    filters: []
    handlers:
        console:
            class: logging.StreamHandler
            formatter: brief
        email:
            class: handlers.SMTPHandler
            mailhost: !!python/tuple [smtp.gmail.com, 587]
            fromaddr: yourname@domain.com
            toaddrs: [bcxxxxxx@gmail.com]
            subject: 'hello, this is from logging'
            credentials: !!python/tuple [yourname@domain.com, yourpwd]
            secure: !!python/tuple [] # force to start tls
        file:
            class: logging.handlers.RotatingFileHandler
            filename: 'app.log'
    loggers:
        app:
            propagate: true
            level: INFO
            handlers: [console]
        app.notice:
            propagate: false
            level: WARNING
            handlers: [console, file]
    disable_existing_loggers: true
    incremental: false
    version: 1

main.py

#coding: utf-8

from time import sleep
import yaml
import logging

basic_logger = logging.getLogger('app')
notice_logger = logging.getLogger('app.notice')


def cal():
    a, b = 1, 1
    while True:
        yield a + b
        a, b = b, a + b


def is_noticable(x):
    return x > 1000 and x % 5 == 0


def main():
    for x in cal():
        basic_logger.info('now: %d' % x)
        if is_noticable(x):
            notice_logger.warn('look: %d' % x)
        sleep(1)


if __name__ == '__main__':
    import logging.config

    config = yaml.load(open('logging.yaml', 'r'))
    print config
    logging.config.dictConfig(config['Logging'])

    main()