Xz Backdoor, Cybersecurity.
string[-1]) &amp; 1 == 1: return True return False def __add(self, radix: RadixObject, char: int, last: bool = False)->RadixObject: if last: radix.endPoint |= 1 << char if not radix.isExist(char): if char < 0x40: radix.louint64 |= 1<<char else: char -= 0x40 radix.hiuint64 |= 1<<char