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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 modify_lattice(self, new_lattice):
 """ Modify the lattice of the structure. Mainly used for changing the basis. Args: new_lattice (Lattice):
 New lattice """

        self._lattice = new_lattice
        for site in self._sites:
            site.lattice = new_lattice