How to draw ROC curve for a multi-class dataset ?

Say I have a multi-class dataset and would like to draw its associated ROC curve for one of its classes (e.g. SkLearn has a handy implementation that calculates the tpr and fpr and another function that generates the auc for you. You can just apply this to your data by treating each class on its own (all other data being negative) by looping through each class. The code below was inspired by the scikit-learn page on this topic itself. For this exercise, I will generate some synthetic sample data and for predictions as well I will create a vector from random uniform distribution.