In order to send the data values, use send_data() API call. The API expects its first parameter as data values in the list for the specified data type and second parameter as the TLAST value.
in_interpolator.send_data(in_interpolator_data, True)
in_classifier.send_data(in_classifier_data, True)
Here the first parameter in_interpolator_data is the list of int16 values expected by the AIE kernel. The second parameter is the TLAST value as True