transaction.py 文件源码

def _fulfillment_from_details(data, _depth=0):
    """Load a fulfillment for a signing spec dictionary

    Args:
        data: tx.output[].condition.details dictionary
    """
    if _depth == 100:
        raise ThresholdTooDeep()

    if data['type'] == 'ed25519-sha-256':
        public_key = base58.b58decode(data['public_key'])
        return Ed25519Sha256(public_key=public_key)

    if data['type'] == 'threshold-sha-256':
        threshold = ThresholdSha256(data['threshold'])
        for cond in data['subconditions']:
            cond = _fulfillment_from_details(cond, _depth+1)
            threshold.add_subfulfillment(cond)
        return threshold

    raise UnsupportedTypeError(data.get('type'))