code: def build_app_loggers(log_level, apps, handlers=None):
      
  
      # Use 'default' handler provided by DEFAULT_LOGGING config if
      # not supplied.
      if handlers is None:
          handlers = ['default']
  
      # The log config expects the handlers value to be a list, so let's
      # make sure of that here.
      if not isinstance(handlers, list):
          handlers = list(handlers)
  
      app_loggers = {}
      for app in apps:
          app_loggers[app] = {
              'level': log_level,
              'handlers': handlers,
              'propagate': False,
          }
  
      return app_loggers
docs: Return a logger dict for app packages with the given log level and no
      propogation since the apps list is parsed/normalized to be the set of top-
      level apps.  The optional handlers argument is provided so that this pattern
      of app loggers can be used independently of the configure_logger method
      below, if desired.