Reading files once smpsite is installed

[facusapienza21]

The mapping from kappa to angular dispersion is currently computed based on an interpolation of a pre-computed file located in kappa_secular. Now, in order to read this file once the package has been installed I had added the following line to define the relative path inside kappa.py:

_file_location = pathlib.Path(__file__).parent.joinpath("kappa_tabular/kappa2angular.csv")#.parent.joinpath("")
df = pd.read_csv(_file_location, header=0)

However, even after installation, this path doesn't seem to be recognized in the Binder hub. I am not sure why this is the case, but I guess this is not the best way of reading the file. This is the message error once we launch Binder