使用YAML配置日志的技巧

version: 1
formatters:
  common:
    format: "%(asctime)s - %(levelname)s - %(threadName)s - %(message)s"
    datefmt: "%Y/%m/%d %H:%M:%S"
  console:
    format: "%(asctime)s - %(levelname)s - %(pathname)s - %(message)s"
    datefmt: "%Y/%m/%d %H:%M:%S"
handlers:
  # 不同会输出大于等于此级别的信息
  common:
    class: logging.handlers.TimedRotatingFileHandler
    formatter: common
    level: INFO
    when: D
    interval: 1
    encoding: utf8
    filename: "logs/running.log"
    # suffix: "%Y-%m-%d.log"
    # 日志保留个数
    backupCount: 7
  console:
    class : logging.StreamHandler
    formatter: console
    level   : INFO
    stream  : ext://sys.stdout
loggers:
  main.common:
    level: INFO
    handlers: [common]
# 如果模块中没有使用 如logging.getLogger('main.common') 这样的配置来获取loggers中对应的配置，则默认会使用下面的root配置
root:
  level: DEBUG
  handlers: [console]

import os
import yaml
import logging
import logging.config

os.chdir(os.path.abspath(os.path.dirname(os.path.abspath(__file__))))

# Logger config
if not os.path.exists('logs'):
    os.mkdir('logs')
# 日志配置
with open('logging.yaml', 'r', encoding='utf-8') as f:
    config = yaml.load(f, Loader=yaml.FullLoader)
    logging.config.dictConfig(config)
logger = logging.getLogger('main.common')