改写成Python代码：if$operation == DECODE ifsubstr$result 0 10 == 0 substr$result 0 10 - time 0 && substr$result 10 16 == substrmd5substr$result 26$keyb 0 16 return substr$result 26;

if operation == 'DECODE': if (int(result[:10]) == 0 or int(result[:10]) - time.time() > 0) and result[10:26] == hashlib.md5((result[26:] + keyb).encode()).hexdigest()[:16]: return result[26:] else: return '' else: return keyc + base64.b64encode(result.encode()).decode().replace('=', '')