ResourceTree.py 文件源码

def __get_plugin(self, plugin_description):
        try:
            if isinstance(plugin_description, Hashable) and plugin_description is not None:
                if plugin_description in self.saved_plugins:
                    return self.saved_plugins[plugin_description]
                raise RuntimeError("Plugin not previously defined")
            elif isinstance(plugin_description, dict):
                return Plugin.plugin(plugin_description)
            raise RuntimeError("Plugin description not dict or Hashable")
        except RuntimeError as ex:
            exception_string = "\n\t".join(str(ex).splitlines())
            self.logger.warn("Could not instantiate plugin from: "+str(plugin_description)+exception_string)