def __init__(self, fingerprint: bytes, path: Sequence[int]) -> None:
        """
        :param fingerprint: The 4 byte BIP 32 fingerprint of a parent key from which this key is derived from
        :param path: The derivation path to reach this key from the key at ``fingerprint``
        """
        self.fingerprint: bytes = fingerprint
        self.path: Sequence[int] = path

        :param fingerprint: The 4 byte BIP 32 fingerprint of a parent key from which this key is derived from
        :param path: The derivation path to reach this key from the key at ``fingerprint``
        
electrum/bip32.py