<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_res_configs(self, rid, config=None, fallback=True):
 """ Return the resources found with the ID `rid` and select the right one based on the configuration, or return all if no configuration was set. But we try to be generous here and at least try to resolve something: This method uses a fallback to return at least one resource (the first one in the list) if more than one items are found and the default config is used and no default entry could be found. This is usually a bad sign (i.e. the developer did not follow the android documentation: https://developer.android.com/guide/topics/resources/localization.html#failing2) In practise an app might just be designed to run on a single locale and thus only has those locales set. You can disable this fallback behaviour, to just return exactly the given result. :param rid: resource id as int :param config: a config to resolve from, or None to get all results :param fallback: Enable the fallback for resolving default configuration (default: True) :return: a list of ARSCResTableConfig: ARSCResTableEntry """

        self._analyse()

        if not rid:
            raise ValueError("'rid' should be set")
        if not isinstance(rid, int):
            raise ValueError("'rid' must be an int")

        if rid not in self.resource_values:
            log.warning("The requested rid '0x{:08x}' could not be found in the list of resources.".format(rid))
            return []

        res_options = self.resource_values[rid]
        if len(res_options) > 1 and config:
            if config in res_options:
                return [(config, res_options[config])]
            elif fallback and config == ARSCResTableConfig.default_config():
                log.warning("No default resource config could be found for the given rid '0x{:08x}', using fallback!".format(rid))
                return [list(self.resource_values[rid].items())[0]]
            else:
                return []
        else:
            return list(res_options.items())