* exemplo de uso simples
  * {{{#!python
import logging
log = logging.getLogger('sqlalchemy')
log.addHandler(logging.StreamHandler())
log.handlers[0].setFormatter(logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(message)s"))
log.setLevel(logging.DEBUG)

log.debug("debug message")
log.info("info message")
log.warn("warn message")
log.error("error message")
log.critical("critical message")
}}}