log_config3.json

{
  "version": 1,
  "disable_existing_loggers": true,
  "formatters": {
    "brief": {
      "class": "logging.Formatter",
      "style": "{",
      "datefmt": "%I:%M:%S",
      "format": "{levelname:8s}; {name:<15s}; {message:s}"
    },
    "standard": {
      "class": "logging.Formatter",
      "style": "{",
      "datefmt": "%I:%M:%S",
      "format": "{levelname:8s}; {asctime:s}; {name:<25s} {funcName:<15s} {lineno:4d}; {message:s}"
    },
    "multi-process": {
      "class": "logging.Formatter",
      "style": "{",
      "datefmt": "%I:%M:%S",
      "format": "{levelname:8s}; {process:5d}; {asctime:s}; {name:<15s} {lineno:4d}; {message:s}"
    },
    "multi-thread": {
      "class": "logging.Formatter",
      "style": "{",
      "datefmt": "%I:%M:%S",
      "format": "{levelname:8s}; {threadName:5d}; {asctime:s}; {name:<15s} {lineno:4d}; {message:s}"
    },
    "verbose": {
      "class": "logging.Formatter",
      "style": "{",
      "datefmt": "%I:%M:%S",
      "format": "{levelname:8s}; {process:5d}; {threadName:8s}; {asctime:s}; {name:<15s} {lineno:4d}; {message:s}"
    },
    "multiline": {
      "class": "logging.Formatter",
      "style": "{",
      "datefmt": "%I:%M:%S",
      "format": "{levelname:8s}\n{process:5d}\n{threadName:8s}\n{asctime:s}\n{name:<15s}{lineno:4d}\n{message:s}\n"
    }
  },
  "handlers": {
    "console":{
      "level": "DEBUG",
      "class": "logging.StreamHandler",
      "formatter": "verbose",
      "stream" : "ext://sys.stdout"
    },
    "file_handler": {
      "level": "INFO",
      "class": "logging.handlers.WatchedFileHandler",
      "formatter": "verbose",
      "filename": "/tmp/file_handler.log",
      "mode": "a",
      "encoding": "utf-8"
    },
    "smtp": {
      "level": "ERROR",
      "class": "logging.handlers.SMTPHandler",
      "formatter": "multiline",
      "mailhost": ["127.0.0.1", 60025],
      "fromaddr": "sender@example.com",
      "toaddrs": ["recipient@example.com"],
      "subject": "Something went wrong"
    }
  },
  "loggers": {
    "mypkg": {
      "handlers": ["console"],
      "level": "DEBUG",
      "propagate": false
    },
    "elasticsearch": {
      "handlers": ["console"],
      "level": "WARNING"
    },
    "requests": {
      "handlers": ["console"],
      "level": "WARNING"
    },
    "sqlalchemy": {
      "handlers": ["console"],
      "level": "WARNING"
    }
  },
  "root": {
    "handlers": ["console", "file_handler", "smtp"],
    "level": "DEBUG"
  }
}