code: def init(options=None, ini_paths=None, argv=None,
           strict=False, **parser_kwargs):
      
      global SINGLETON
      SINGLETON = Config(
          options=options,
          ini_paths=ini_paths,
          argv=argv,
          **parser_kwargs)
      SINGLETON.parse(argv, strict=strict)
      return SINGLETON
docs: Initialize singleton config and read/parse configuration.
  
      :keyword bool strict: when true, will error out on invalid arguments
          (default behavior is to ignore them)
      :returns: the loaded configuration.