With the current version (17/10/2020 - v1.2.0) it should be:
Save file:
save_pickle(path/'to.pkl',to)
Load file:
load_pickle(path/'to.pkl')
With the current version (17/10/2020 - v1.2.0) it should be:
Save file:
save_pickle(path/'to.pkl',to)
Load file:
load_pickle(path/'to.pkl')