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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 is_valid_op(self, symmop):
 """ Check if a particular symmetry operation is a valid symmetry operation for a molecule, i.e., the operation maps all atoms to another equivalent atom. Args: symmop (SymmOp):
 Symmetry operation to test. Returns: (bool):
 Whether SymmOp is valid for Molecule. """

        coords = self.centered_mol.cart_coords
        for site in self.centered_mol:
            coord = symmop.operate(site.coords)
            ind = find_in_coord_list(coords, coord, self.tol)
            if not (len(ind) == 1
                    and self.centered_mol[ind[0]].species
                    == site.species):
                return False
        return True