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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_metric(self, slug):
 """Get the current values for a metric. Returns a dictionary with metric values accumulated for the seconds, minutes, hours, day, week, month, and year. """

        results = OrderedDict()
        granularities = self._granularities()
        keys = self._build_keys(slug)
        for granularity, key in zip(granularities, keys):
            results[granularity] = self.r.get(key)
        return results