python logging

https://www.cnblogs.com/liujiacai/p/7804848.html

C:WindowsSystem32>pip freeze
certifi==2018.4.16
chardet==3.0.4
Django==2.0.6
idna==2.7
PyMySQL==0.8.1
pytz==2018.4
PyYAML==3.13
requests==2.19.1
selenium==3.13.0
urllib3==1.23
xlrd==1.1.0
xlwt==1.3.0

version: 1
disable_existing_loggers: False
formatters:
        simple:
            format: "%(asctime)s - %(name)s - %(levelname)s - %(threadName)s - %(lineno)d - %(message)s"
handlers:
    console:
            class: logging.StreamHandler
            level: DEBUG
            formatter: simple
            stream: ext://sys.stdout
    info_file_handler:
            class: logging.handlers.RotatingFileHandler
            level: INFO
            formatter: simple
            filename: info.log
            maxBytes: 10485760
            backupCount: 20
            encoding: utf8
    error_file_handler:
            class: logging.handlers.RotatingFileHandler
            level: ERROR
            formatter: simple
            filename: errors.log
            maxBytes: 10485760
            backupCount: 20
            encoding: utf8
loggers:
    my_module:
            level: ERROR
            handlers: [info_file_handler]
            propagate: no
root:
    level: INFO
    handlers: [console,info_file_handler,error_file_handler]

import yaml
import logging.config
import os

def setup_logging(default_path = "logging.yaml",default_level = logging.INFO,env_key = "LOG_CFG"):
    path = default_path
    value = os.getenv(env_key,None)
    if value:
        path = value
    if os.path.exists(path):
        with open(path,"r") as f:
            config = yaml.load(f)
            logging.config.dictConfig(config)
    else:
        logging.basicConfig(level = default_level)

def func():
    logging.info("start func")

    logging.info("exec func")

    logging.info("end func")

if __name__ == "__main__":
    setup_logging(default_path = "logging.yaml")
    func()