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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 symmetric_difference_update(self, other):
 		"""Update self to include only the symmetric difference with other."""

		other = setlist(other)
		indices_to_delete = set()
		for i, item in enumerate(self):
			if item in other:
				indices_to_delete.add(i)
		for item in other:
			self.add(item)
		self._delete_values_by_index(indices_to_delete)