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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 scan_elements(self):
 """ Yield each of the elements from the collection, without pulling them all into memory. .. warning:: This method is not available on the set collections provided by Python. This method may return the element multiple times. See the `Redis SCAN documentation <http://redis.io/commands/scan#scan-guarantees>`_ for details. """

        for x in self.redis.sscan_iter(self.key):
            yield self._unpickle(x)