Helps creating guess lines

[clrengif]

Best regards,
I come looking for help, in the step of creating the initial lines I have approximately the range in wavelength of each order.

[6632, 6888],
[6450, 6700],
[6250, 6500],
[6080, 6327],
etc

Also the lines in a txt file.

How can I create the npz file with the "cs_line" key from here?

I follow the tutorial and run wavecal_master step which creates thar_master.fits, but when i see the script wavecal_creator.py i see that wavecal_master should create a npz file

Load ThAr data generated by wavecal_master

thar_data = np.load(join(dirname(file), "harps_red.thar.npz"))

What am I doing wrong?

Thank you very much for all the help you can give me