logging.config.dictConfig 的完整示例在哪里？

Question

如何使用dictConfig ？ 我應該如何指定它的輸入config字典？

Answer 1

這里怎么樣！ 相應的文檔參考是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.")

如果您看到來自第三方包的日志過多，請務必在導入第三方包之前使用logging.config.dictConfig(LOGGING_CONFIG)運行此配置。

要使用日志過濾器向每條日志消息添加額外的自定義信息，請考慮這個答案。

Answer 2

接受的答案很好！ 但是，如果可以從不那么復雜的東西開始呢？ 日志模塊是非常強大的東西，文檔有點壓倒性，尤其是對於新手。 但是一開始你不需要配置格式化程序和處理程序。 當你弄清楚你想要什么時，你可以添加它。

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')

Answer 3

流處理程序、文件處理程序、旋轉文件處理程序和 SMTP 處理程序的示例

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)

Answer 4

我在下面找到了Django v1.11.15默認配置，希望對您有所幫助

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,
        },
    }
}

Answer 5

有一個更新的例子，聲明一個 logging.config.dictConfig() 字典模式隱藏在日志手冊示例中。 從該食譜鏈接向上滾動以查看 dictConfig() 的用法。

這是一個使用 StreamHandler 和具有自定義format和datefmt的RotatingFileHandler記錄到 stdout 和“logs”子目錄的示例用例。

1. 導入模塊並建立“logs”子目錄的跨平台絕對路徑

   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")

2. 根據字典模式文檔建立模式。

    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"] } }

3. 使用字典模式配置logging

    dictConfig(logging_schema)

4. 嘗試一些測試用例，看看是否一切正常

   if __name__ == "__main__": logging.info("testing an info log entry") logging.warning("testing a warning log entry")

Answer 6

萬一從現有記錄器的配置開始有用，可以通過以下方式獲取當前配置字典

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

print(current_config)  

它會是這樣的：

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

那么，如果你只是這樣做

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)

然后你會發現：

print(logger.__dict__)

是你所希望的

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

Answer 7

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import logging
import logging.handlers
from logging.config import dictConfig

logger = logging.getLogger(__name__)

DEFAULT_LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
}
def configure_logging(logfile_path):
    """
    Initialize logging defaults for Project.

    :param logfile_path: logfile used to the logfile
    :type logfile_path: string

    This function does:

    - Assign INFO and DEBUG level to logger file handler and console handler

    """
    dictConfig(DEFAULT_LOGGING)

    default_formatter = logging.Formatter(
        "[%(asctime)s] [%(levelname)s] [%(name)s] [%(funcName)s():%(lineno)s] [PID:%(process)d TID:%(thread)d] %(message)s",
        "%d/%m/%Y %H:%M:%S")

    file_handler = logging.handlers.RotatingFileHandler(logfile_path, maxBytes=10485760,backupCount=300, encoding='utf-8')
    file_handler.setLevel(logging.INFO)

    console_handler = logging.StreamHandler()
    console_handler.setLevel(logging.DEBUG)

    file_handler.setFormatter(default_formatter)
    console_handler.setFormatter(default_formatter)

    logging.root.setLevel(logging.DEBUG)
    logging.root.addHandler(file_handler)
    logging.root.addHandler(console_handler)



[31/10/2015 22:00:33] [DEBUG] [yourmodulename] [yourfunction_name():9] [PID:61314 TID:140735248744448] this is logger infomation from hello module