json_util.py 文件源码

def decode_hex16(value, size=None, minimum=False):
    """Decode hexlified field.

    :param unicode value:
    :param int size: Required length (after decoding).
    :param bool minimum: If ``True``, then `size` will be treated as
        minimum required length, as opposed to exact equality.

    :rtype: bytes

    """
    value = value.encode()
    if size is not None and ((not minimum and len(value) != size * 2) or
                             (minimum and len(value) < size * 2)):
        raise errors.DeserializationError()
    error_cls = TypeError if six.PY2 else binascii.Error
    try:
        return binascii.unhexlify(value)
    except error_cls as error:
        raise errors.DeserializationError(error)