Import and Export
Details of modes solved can be exported as CSV file. Assuming we have a list
of modes stored in modes, they can be saved to a file filename = example.csv
using:
lpmodes.modes_to_csv(modes, filename)
The modes can also be reloaded by:
modes = lpmodes.csv_to_modes(filename)
By default, a header line is included in the CSV, pass header = False as
a keyword argument to not include a header (and also when loading in from a file
with no header).