Utility of method oneHot in utils.py

[SalmaG98]

Hello @meijieru and collaborators,

I'm trying to use this code but I'm having some troubles with it, which led me to try and step through the training code and see how the call stack evolves, one thing I noticed is that the oneHot method in utils.py is not called anywhere aside from test_utils.py so I don't get what this method is there for.

Could anyone help me get a better understanding of it? Thanks!