def get_unspents(address, blockchain_client=BlockchainInfoClient()):
    """ Get the spendable transaction outputs, also known as UTXOs or
        unspent transaction outputs.
    """
    if not isinstance(blockchain_client, BlockchainInfoClient):
        raise Exception('A BlockchainInfoClient object is required')

    url = BLOCKCHAIN_API_BASE_URL + "/unspent?format=json&active=" + address

    auth = blockchain_client.auth
    if auth and len(auth) == 2 and isinstance(auth[0], str):
        url = url + "&api_code=" + auth[0]

    r = requests.get(url, auth=auth)
    try:
        unspents = r.json()["unspent_outputs"]
    except __HOLE__, e:
        raise Exception('Invalid response from blockchain.info.')
    
    return format_unspents(unspents)
dataset/ETHPy150Open blockstack/pybitcoin/pybitcoin/services/blockchain_info.py/get_unspents