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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 find_equivalent_sites(self, site):
 """ Finds all symmetrically equivalent sites for a particular site Args: site (PeriodicSite):
 A site in the structure Returns: ([PeriodicSite]):
 List of all symmetrically equivalent sites. """

        for sites in self.equivalent_sites:
            if site in sites:
                return sites

        raise ValueError("Site not in structure")