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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 cluster_count_key_in_slots(self, slot):
 """Return the number of local keys in the specified hash slot."""

        if not isinstance(slot, int):
            raise TypeError("Expected slot to be of type int, got {}"
                            .format(type(slot)))
        return self.execute(b'CLUSTER', b'COUNTKEYSINSLOT', slot)