To whom it may concern,
I am a research student currently working on seismic data analysis from the University of Western Australia, and I am very new to python let alone Obspy and therefore would like to seek for some help on this matter.
Regards,
Lawrence
Hi Lawrence,
I don’t have all the files so I did not run your example and cannot tell what went wrong. It would be great if you can set-up a small self-containing example with data and open an issue on github (GitHub - obspy/obspy: ObsPy: A Python Toolbox for seismology/seismological observatories.) so we can investigate the problem.
Note that you are trying to remove the response of one seismometer and adding the response of another seismometer. A valid use case but not what you want according to your description. Assuming you have miniseed and dataless SEED files (which judging from your code you have), you can do:
import obspy
st = obspy.read(“file.mseed”)
inv = obspy.read_inventory(“file.seed”)
st.remove_response(inventory=inv, …)
Please have a look at the documentation for all available parameters as they have a big influence on the final result: obspy.core.trace.Trace.remove_response — ObsPy 1.4.0 documentation
Also please feel free to visit our chat room () for questions as this 
Cheers!
Lion