def get_category(self, metric):
        """
        Return a string category for the metric.

        The category is made up of this reporter's prefix and the
        metric's group and tags.

        Examples:
            prefix = 'foo', group = 'bar', tags = {'a': 1, 'b': 2}
            returns: 'foo.bar.a=1,b=2'

            prefix = 'foo', group = 'bar', tags = None
            returns: 'foo.bar'

            prefix = None, group = 'bar', tags = None
            returns: 'bar'
        """
        tags = ','.join('%s=%s' + (k, v) for k, v in
                        sorted(metric.metric_name.tags.items()))
        return '.'.join(x for x in
                        [self._prefix, metric.metric_name.group, tags] if x)
dataset/ETHPy150Open dpkp/kafka-python/kafka/metrics/dict_reporter.py/DictReporter.get_category/operator `%` -> `+`