python日志模块logging

示例代码

# 导入日志模块
import logging
import logging.config

from config import LOG_DIR, settings


def config_logging():  # 定义日志配置方法
    config_dict = {  # 定义日志配置字典
        'version': 1,
        'disable_existing_loggers': False,
        'formatters': {
            'debug_fmt': {'format': '%(asctime)s %(pathname)s:%(lineno)d @%(funcName)s %(levelname)s: %(message)s'},
            'test_name': {'format': '%(asctime)s %(pathname)s:%(lineno)d %(name)s @%(funcName)s %(levelname)s: %(message)s'},
            'verbose': {'format': '%(asctime)s %(levelname)s %(name)s %(process)d %(thread)d %(message)s'},
        },
        'handlers': {  # 定义'handlers', 这里有三个handlers-> [Stream, debug_file, info_file]
            "Stream": {
                "formatter": 'debug_fmt',
                'level': 'DEBUG',
                "class": "logging.StreamHandler",
            },
            "debug_file": {
                "formatter": 'debug_fmt',
                "level": 'DEBUG',
                "class": 'logging.handlers.TimedRotatingFileHandler',
                "filename": LOG_DIR / 'debug.log',
                "backupCount": 1,
                "when": 'D',
                "encoding": 'utf-8',
            },
            "info_file": {
                "formatter": 'debug_fmt',
                "level": 'INFO',
                "class": 'logging.handlers.TimedRotatingFileHandler',
                "filename": LOG_DIR / 'info.log',
                "backupCount": 3,
                "when": 'D',
                "encoding": 'utf-8',
            },
        },
        'loggers': {  # 定义loggers
            '': {'level': settings.LOG_LEVEL, 'handlers': settings.LOG_HANDLERS},  # 使用了dynaconf模块调用config配置, level可以传入DEBUG、INFO等, handlersk可以传入字典中定义的handlers
        },
    }
    logging.config.dictConfig(config_dict)  # 使用dictConfig方法，传入字典格式的日志配置


config_logging()
logger = logging.getLogger('msp_log')  # 实例化log对象为logger, 后续调用可以用logger.info('msg')


if __name__ == '__main__':

    def how(a, *args, **kwargs):
        logger.debug('debug')
        logger.info('info')
        logger.info(LOG_DIR)
        logger.info(f'{a, *args}')
        return 'hello'

    how(2, [12, 34], {'aaaa': 'aaaa', 'bb': 'bb'}, c='c', d='d')

返回

2024-01-29 15:04:00,836 d:\My\crmProjects\utils\log_setting.py:56 @how DEBUG: debug
2024-01-29 15:04:00,837 d:\My\crmProjects\utils\log_setting.py:57 @how INFO: info
2024-01-29 15:04:00,837 d:\My\crmProjects\utils\log_setting.py:58 @how INFO: D:\My\crmProjects\files\logs
2024-01-29 15:04:00,838 d:\My\crmProjects\utils\log_setting.py:59 @how INFO: (2, [12, 34], {'aaaa': 'aaaa', 'bb': 'bb'})