# import the logging library
import logging
# 獲得logger實(shí)例
logger = logging.getLogger(__name__)
def my_view(request, arg1, arg):
    ...
    if error_happens:
        # Log an error message
        logger.error('Something went wrong!')

# 給ADMINS發(fā)送郵件需要配置
ADMINS = (
 ('admin_name','your@gmail.com'),
)
MANAGERS = ADMINS
# 創(chuàng)建log文件的文件夾
LOG_DIR = os.path.join(BASE_DIR, "logs")

# 基本配置，可以復(fù)用的
LOGGING = {
    "version": 1,
    "disable_existing_loggers": False,
    "filters": {"require_debug_false": {"()": "django.utils.log.RequireDebugFalse"}},
    "formatters": { # 定義了兩種日志格式
        "verbose": { # 標(biāo)準(zhǔn)
            "format": "%(levelname)s %(asctime)s %(module)s "
            "%(process)d %(thread)d %(message)s"
        },
        'simple': { # 簡單
            'format': '[%(levelname)s][%(asctime)s][%(filename)s:%(lineno)d]%(message)s'
        },
    },
    "handlers": { # 定義了三種日志處理方式
        "mail_admins": { # 只有debug=False且Error級別以上發(fā)郵件給admin
            "level": "ERROR",
            "filters": ["require_debug_false"],
            "class": "django.utils.log.AdminEmailHandler",
        },
        'file': { # Info級別以上保存到日志文件
            'level': 'INFO', 
            'class': 'logging.handlers.RotatingFileHandler',  # 保存到文件，根據(jù)文件大小自動切
            'filename': os.path.join(LOG_DIR,"info.log"),  # 日志文件
            'maxBytes': 1024 * 1024 * 10,  # 日志大小 10M
            'backupCount': 2,  # 備份數(shù)為 2
            'formatter': 'simple', # 簡單格式
            'encoding': 'utf-8',
        },
        "console": { # 打印到終端console
            "level": "DEBUG",
            "class": "logging.StreamHandler",
            "formatter": "verbose",
        },
    },
    "root": {"level": "INFO", "handlers": ["console"]},
    "loggers": {
        "django.request": { # Django的request發(fā)生error會自動記錄
            "handlers": ["mail_admins"],
            "level": "ERROR",
            "propagate": True,  # 向不向更高級別的logger傳遞
        },
        "django.security.DisallowedHost": { # 對于不在 ALLOWED_HOSTS 中的請求不發(fā)送報錯郵件
            "level": "ERROR",
            "handlers": ["console", "mail_admins"],
            "propagate": True,
        },
    },
}