logging.json

{
  "version" : 1,
  "disable_existing_loggers" : false,
  "formatters" : {
    "simple" :{
      "format" : "[%(levelname)s]: %(message)s"
    }
  },
  "handlers" : {
    "console": {
            "class": "logging.StreamHandler",
            "level": "INFO",
            "formatter": "simple",
            "stream": "ext://sys.stdout"
        },
    "log_file": {
            "class": "logging.FileHandler",
            "level": "DEBUG",
            "formatter": "simple",
            "filename": "gen.log",
            "mode" : "w",
            "encoding": "utf8"
        }
  },
  "loggers" : {
    "generator" : {
      "level" : "DEBUG",
      "handlers" : ["console", "log_file"]
    }
  }
}