Need to convert Matlab code to python3

basically, I am a scientist, and I have some code that works perfectly well on Matlab. I need this code converted to python3 as soon as possible. I have included the matlab code, it is named "descend54.m". There is a wrapper script named "ncon" for both the matlab and python files. The python file is named "descend54.py" and includes a graph of both the results for the matlab and python3 variants; as I said earlier, the matlab code is correct, and I need to get the python3 version running ASAP.