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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def setIsochronous( self, endpoint, buffer_or_len, callback=None, user_data=None, timeout=0, iso_transfer_length_list=None):
 """ Setup transfer for isochronous use. endpoint Endpoint to submit transfer to. Defines transfer direction (see ENDPOINT_OUT and ENDPOINT_IN)). buffer_or_len Either a string (when sending data), or expected data length (when receiving data) To avoid memory copies, use an object implementing the writeable buffer interface (ex: bytearray). callback Callback function to be invoked on transfer completion. Called with transfer as parameter, return value ignored. user_data User data to pass to callback function. timeout Transfer timeout in milliseconds. 0 to disable. iso_transfer_length_list List of individual transfer sizes. If not provided, buffer_or_len will be divided evenly among available transfers if possible, and raise ValueError otherwise. """

        if self.__submitted:
            raise ValueError('Cannot alter a submitted transfer')
        num_iso_packets = self.__num_iso_packets
        if num_iso_packets == 0:
            raise TypeError(
                'This transfer canot be used for isochronous I/O. '
                'You must get another one with a non-zero iso_packets '
                'parameter.'
            )
        if self.__doomed:
            raise DoomedTransferError('Cannot reuse a doomed transfer')
        string_buffer, transfer_py_buffer = create_binary_buffer(buffer_or_len)
        buffer_length = sizeof(string_buffer)
        if iso_transfer_length_list is None:
            iso_length, remainder = divmod(buffer_length, num_iso_packets)
            if remainder:
                raise ValueError(
                    'Buffer size %i cannot be evenly distributed among %i '
                    'transfers' % (
                        buffer_length,
                        num_iso_packets,
                    )
                )
            iso_transfer_length_list = [iso_length] * num_iso_packets
        configured_iso_packets = len(iso_transfer_length_list)
        if configured_iso_packets > num_iso_packets:
            raise ValueError(
                'Too many ISO transfer lengths (%i), there are '
                'only %i ISO transfers available' % (
                    configured_iso_packets,
                    num_iso_packets,
                )
            )
        if sum(iso_transfer_length_list) > buffer_length:
            raise ValueError(
                'ISO transfers too long (%i), there are only '
                '%i bytes available' % (
                    sum(iso_transfer_length_list),
                    buffer_length,
                )
            )
        transfer_p = self.__transfer
        self.__initialized = False
        self.__transfer_buffer = string_buffer
        self.__transfer_py_buffer = transfer_py_buffer
        self.__user_data = user_data
        libusb1.libusb_fill_iso_transfer(
            transfer_p, self.__handle, endpoint, string_buffer, buffer_length,
            configured_iso_packets, self.__ctypesCallbackWrapper, None,
            timeout)
        for length, iso_packet_desc in zip(
                iso_transfer_length_list,
                libusb1.get_iso_packet_list(transfer_p)):
            if length <= 0:
                raise ValueError(
                    'Negative/null length transfers are not possible.'
                )
            iso_packet_desc.length = length
        self.__callback = callback
        self.__initialized = True