def upgrade_metadata(root):
data = Data()
data.prefixes = read_prefixes(root)
data.refines = read_refines(root)
upgrade_identifiers(root, data)
upgrade_title(root, data)
upgrade_languages(root, data)
upgrade_authors(root, data)
upgrade_timestamp(root, data)
upgrade_date(root, data)
upgrade_rating(root, data)
upgrade_series(root, data)
upgrade_custom(root, data)
upgrade_meta(root, data)
upgrade_cover(root, data)
remove_invalid_attrs_in_dc_metadata(root, data)
set_last_modified(root, data.prefixes, data.refines)
pretty_print_opf(root)
def upgrade_metadata(root):
data = Data()
data.prefixes = read_prefixes(root)
data.refines = read_refines(root)
upgrade_identifiers(root, data)
upgrade_title(root, data)
upgrade_languages(root, data)
upgrade_authors(root, data)
upgrade_timestamp(root, data)
upgrade_date(root, data)
upgrade_rating(root, data)
upgrade_series(root, data)
upgrade_custom(root, data)
upgrade_meta(root, data)
upgrade_cover(root, data)
remove_invalid_attrs_in_dc_metadata(root, data)
set_last_modified(root, data.prefixes, data.refines)
pretty_print_opf(root)