python logging模块

logging level

Level	Numeric value
CRITICAL	50
ERROR	40
WARNING	30
INFO	20
DEBUG	10
NOTSET	0

value 值越大等级越高

logging config

version: 1

loggers:
  root:
    level: DEBUG
    handlers: [console]
  tornado:
    level: DEBUG
    handlers: [console,log]
    propagate: no
  tornado.access:
    level: DEBUG
    handlers: [console, access]
    propagate: no
  log:
    level: DEBUG
    handlers: [console,log]
    propagate: no

formatters:
  simple:
    format: '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
  timedRotating:
    format: '%(asctime)s %(name)-12s %(levelname)-8s - %(message)s'

handlers:
  console:
    class: logging.StreamHandler
    level: DEBUG
    formatter: simple
  access:
    class: logging.handlers.TimedRotatingFileHandler
    level: DEBUG
    formatter: simple
    filename: 'logs/access.log'
    when: 'midnight'
    interval: 1
    backupCount: 180
  log:
    class: logging.handlers.TimedRotatingFileHandler
    level: DEBUG
    formatter: timedRotating
    filename: 'logs/log.log'
    when: 'midnight'
    interval: 1
    backupCount: 180
    encoding: 'utf8'