get a Structure with Mulliken and Loewdin charges as site properties
        Args:
            structure_filename: filename of POSCAR
        Returns:
            Structure Object with Mulliken and Loewdin charges as site properties

def get_structure_with_charges(self, structure_filename):
        """
        get a Structure with Mulliken and Loewdin charges as site properties
        Args:
            structure_filename: filename of POSCAR
        Returns:
            Structure Object with Mulliken and Loewdin charges as site properties
        """

        struct = Structure.from_file(structure_filename)
        Mulliken = self.Mulliken
        Loewdin = self.Loewdin
        site_properties = {"Mulliken Charges": Mulliken, "Loewdin Charges": Loewdin}
        new_struct = struct.copy(site_properties=site_properties)
        return new_struct