这里怎么样!对应的文档参考是configuration-dictionary-schema。

LOGGING_CONFIG = { 
    'version': 1,
    'disable_existing_loggers': True,
    'formatters': { 
        'standard': { 
            'format': '%(asctime)s [%(levelname)s] %(name)s: %(message)s'
        },
    },
    'handlers': { 
        'default': { 
            'level': 'INFO',
            'formatter': 'standard',
            'class': 'logging.StreamHandler',
            'stream': 'ext://sys.stdout',  # Default is stderr
        },
    },
    'loggers': { 
        '': {  # root logger
            'handlers': ['default'],
            'level': 'WARNING',
            'propagate': False
        },
        'my.packg': { 
            'handlers': ['default'],
            'level': 'INFO',
            'propagate': False
        },
        '__main__': {  # if __name__ == '__main__'
            'handlers': ['default'],
            'level': 'DEBUG',
            'propagate': False
        },
    } 
}

用法:

import logging.config

# Run once at startup:
logging.config.dictConfig(LOGGING_CONFIG)

# Include in each module:
log = logging.getLogger(__name__)
log.debug("Logging is configured.")

如果您看到太多来自第三方包的日志，请确保在导入第三方包之前使用logging.config.dictConfig(LOGGING_CONFIG)运行此配置。

要使用日志筛选器向每条日志消息添加额外的自定义信息，请考虑以下答案。

公认的答案很好!但如果我们可以从不那么复杂的东西开始呢?日志模块是非常强大的东西，文档是有点压倒性的，特别是对于新手。但是一开始不需要配置格式化程序和处理程序。等你想好了再加吧。

例如:

import logging.config

DEFAULT_LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'loggers': {
        '': {
            'level': 'INFO',
        },
        'another.module': {
            'level': 'DEBUG',
        },
    }
}

logging.config.dictConfig(DEFAULT_LOGGING)

logging.info('Hello, log')

我在下面找到了Django v1.11.15的默认配置，希望对你有所帮助

DEFAULT_LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'filters': {
        'require_debug_false': {
            '()': 'django.utils.log.RequireDebugFalse',
        },
        'require_debug_true': {
            '()': 'django.utils.log.RequireDebugTrue',
        },
    },
    'formatters': {
        'django.server': {
            '()': 'django.utils.log.ServerFormatter',
            'format': '[%(server_time)s] %(message)s',
        }
    },
    'handlers': {
        'console': {
            'level': 'INFO',
            'filters': ['require_debug_true'],
            'class': 'logging.StreamHandler',
        },
        'django.server': {
            'level': 'INFO',
            'class': 'logging.StreamHandler',
            'formatter': 'django.server',
        },
        'mail_admins': {
            'level': 'ERROR',
            'filters': ['require_debug_false'],
            'class': 'django.utils.log.AdminEmailHandler'
        }
    },
    'loggers': {
        'django': {
            'handlers': ['console', 'mail_admins'],
            'level': 'INFO',
        },
        'django.server': {
            'handlers': ['django.server'],
            'level': 'INFO',
            'propagate': False,
        },
    }
}

示例与流处理程序，文件处理程序，旋转文件处理程序和SMTP处理程序

from logging.config import dictConfig

LOGGING_CONFIG = {
    'version': 1,
    'loggers': {
        '': {  # root logger
            'level': 'NOTSET',
            'handlers': ['debug_console_handler', 'info_rotating_file_handler', 'error_file_handler', 'critical_mail_handler'],
        },
        'my.package': { 
            'level': 'WARNING',
            'propagate': False,
            'handlers': ['info_rotating_file_handler', 'error_file_handler' ],
        },
    },
    'handlers': {
        'debug_console_handler': {
            'level': 'DEBUG',
            'formatter': 'info',
            'class': 'logging.StreamHandler',
            'stream': 'ext://sys.stdout',
        },
        'info_rotating_file_handler': {
            'level': 'INFO',
            'formatter': 'info',
            'class': 'logging.handlers.RotatingFileHandler',
            'filename': 'info.log',
            'mode': 'a',
            'maxBytes': 1048576,
            'backupCount': 10
        },
        'error_file_handler': {
            'level': 'WARNING',
            'formatter': 'error',
            'class': 'logging.FileHandler',
            'filename': 'error.log',
            'mode': 'a',
        },
        'critical_mail_handler': {
            'level': 'CRITICAL',
            'formatter': 'error',
            'class': 'logging.handlers.SMTPHandler',
            'mailhost' : 'localhost',
            'fromaddr': 'monitoring@domain.com',
            'toaddrs': ['dev@domain.com', 'qa@domain.com'],
            'subject': 'Critical error with application name'
        }
    },
    'formatters': {
        'info': {
            'format': '%(asctime)s-%(levelname)s-%(name)s::%(module)s|%(lineno)s:: %(message)s'
        },
        'error': {
            'format': '%(asctime)s-%(levelname)s-%(name)s-%(process)d::%(module)s|%(lineno)s:: %(message)s'
        },
    },

}

dictConfig(LOGGING_CONFIG)

在日志烹饪书示例中有一个更新的声明logging.config. dictconfig()字典模式的示例。从烹饪书链接向上滚动，查看dictConfig()的用法。

下面是一个使用自定义格式和datefmt的StreamHandler和RotatingFileHandler记录到stdout和“logs”子目录的示例用例。

Imports modules and establish a cross-platform absolute path to the "logs" subdirectory from os.path import abspath, dirname, join import logging from logging.config import dictConfig base_dir = abspath(dirname(__file__)) logs_target = join(base_dir + "\logs", "python_logs.log") Establish the schema according to the dictionary schema documentation. logging_schema = { # Always 1. Schema versioning may be added in a future release of logging "version": 1, # "Name of formatter" : {Formatter Config Dict} "formatters": { # Formatter Name "standard": { # class is always "logging.Formatter" "class": "logging.Formatter", # Optional: logging output format "format": "%(asctime)s\t%(levelname)s\t%(filename)s\t%(message)s", # Optional: asctime format "datefmt": "%d %b %y %H:%M:%S" } }, # Handlers use the formatter names declared above "handlers": { # Name of handler "console": { # The class of logger. A mixture of logging.config.dictConfig() and # logger class-specific keyword arguments (kwargs) are passed in here. "class": "logging.StreamHandler", # This is the formatter name declared above "formatter": "standard", "level": "INFO", # The default is stderr "stream": "ext://sys.stdout" }, # Same as the StreamHandler example above, but with different # handler-specific kwargs. "file": { "class": "logging.handlers.RotatingFileHandler", "formatter": "standard", "level": "INFO", "filename": logs_target, "mode": "a", "encoding": "utf-8", "maxBytes": 500000, "backupCount": 4 } }, # Loggers use the handler names declared above "loggers" : { "__main__": { # if __name__ == "__main__" # Use a list even if one handler is used "handlers": ["console", "file"], "level": "INFO", "propagate": False } }, # Just a standalone kwarg for the root logger "root" : { "level": "INFO", "handlers": ["file"] } } Configure logging with the dictionary schema dictConfig(logging_schema) Try some test cases to see if everything is working properly if __name__ == "__main__": logging.info("testing an info log entry") logging.warning("testing a warning log entry")

[编辑回答@baxx的问题]

要在代码库中重用此设置，请在调用dictConfig()的脚本中实例化一个记录器，然后将该记录器导入到其他地方 # my_module / config / my_config.py dictConfig (logging_schema) my_logger = getLogger(__name__)

然后在另一个脚本中

    from my_module.config.my_config import my_logger as logger
    logger.info("Hello world!")

还有一件事，如果从现有的记录器的配置开始是有用的，当前的配置字典是可以通过

import logging
logger = logging.getLogger()
current_config = logger.__dict__  # <-- yes, it's just the dict

print(current_config)  

大概是这样的:

{'filters': [], 'name': 'root', 'level': 30, 'parent': None, 'propagate': True, 'handlers': [], 'disabled': False, '_cache': {}}

然后，如果你这样做

new_config=current_config

new_config['version']=1
new_config['name']='fubar'
new_config['level']=20
#  ...and whatever other changes you wish

logging.config.dictConfig(new_config)

你会发现:

print(logger.__dict__)

这是你所希望的吗

{'filters': [], 'name': 'fubar', 'level': 20, 'parent': None, 'propagate': True, 'handlers': [], 'disabled': False, '_cache': {}, 'version': 1}