fees.py 文件源码

def get_fees():
    try:
        response = requests.get(_fee_host + "v1/fees/recommended")
        if response.status_code == 200:
            fee_per_kb = response.json()['halfHourFee'] * 1000
        else:
            raise requests.ConnectionError('Received status_code %d' % response.status_code)
    except requests.RequestException as error:
        fee_per_kb = DEFAULT_FEE_PER_KB
        logger.error(
            "Error getting recommended fees from server: %s. Using defaults." %
            error)

    if not 0 <= fee_per_kb <= 2 * DEFAULT_FEE_PER_KB:
        raise exceptions.UnreasonableFeeError(
            'Unreasonable fee per kB: %s' % fee_per_kb)

    return {
        'per_kb': fee_per_kb,
        'per_input': int(DEFAULT_INPUT_SIZE_KB * fee_per_kb),
        'per_output': int(DEFAULT_OUTPUT_SIZE_KB * fee_per_kb)
    }