You can then look at src/parser_wrapper, src/units_wrapper or src/cooling_wrapper (do not care about how I deal with the input/output, you will need to focus on it to understand it).
At the end, you can look at how I deal with the python/C interface. First you can look at pyswiftsim/structure.py where I define a python class for each struct that I am wrapping (using https://docs.python.org/3/library/struct.html) and then to src/pyswiftsim_tools where I define the C methods to transform a python object to a C object. The big advantage of my method is that you can modify any non pointer field (I would like to allow changing a pointer, but it may be tricky).
