I got stuck on this can anyone feel me where is the error in this code

Course Q&A Machine Learning Specialization Unsupervised Learning, Recommenders, Reinforcement
1

{mentor edit: code removed}

2

Please do not post your code on the forum. That’s not allowed by the Code of Conduct.

If a mentor needs to see your code, we’ll contact you with instructions.

The way the forum works best is if you post your error messages, because that usually contains enough clues to identify what fix is needed.