def db_update(): metadata = Metadata() db = Db() calibreid = db.get_id(metadata.id) if calibreid is None: return 1, 'Book not found in Calibre: %s' % options.dir c = Calibre() c.update_content(calibreid, metadata.bookfile) c.update_metadata(calibreid, metadata) return 0, 'Finished updating in Calibre: %s' % options.dir