code: def configure_installed_apps_logger(level, verbose=False,
                                      additional_packages=None, filename=None):
      
      if settings.LOGGING_CONFIG:
          raise ImproperlyConfigured(LOGGING_CONFIG_ERROR_MSG)
  
      app_set = _normalize_apps(settings.INSTALLED_APPS)
      # Add any additional app modules to the set of apps we want to configure
      if additional_packages:
          # Make sure we're dealing with a list of additional apps before we
          # convert to a set
          if not isinstance(additional_packages, list):
              additional_packages = list(additional_packages)
          # Update the app set with these additional app modules
          app_set.update(set(additional_packages))
  
      config = _build_logging_config(
          level, app_set, verbose, filename)
  
      logging.config.dictConfig(config)
docs: Builds and enables a logger with a logger list of the top-level list of
      installed app modules (based on package name) plus any additional
      application packages passed in - for example, a user may want to log a
      dependent package of one the installed apps.  The logger will write either
      to the console or to a file based on the presence of the filename parameter.
      Check that the LOGGING_CONFIG setting is None before we configure the logger
      in order to prevent maintaining Django's list of log handlers.