IndexError in C3_W2_Collaborative_RecSys_Assignment

Dear,

I put the exact answer from hint for Exercise 1 For loop Implementation:

The cell it self run successfully, but the following cell told me that I have indexError from the previous cell.

Sorry and the IndexError

is

What should I do to resolve it?

Have you tried to restart the notebook kernek and run all the previous cells again?

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Hi @AAT, please make sure you don’t mix up captial letter with small letter in variable names.

Raymond

PS: We can’t share assignment code, so I am removing it from your post.

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@rmwkwok Sorry for breaching the forum rule.

I solve the problem now.

No problem @AAT . It’s good you have solved the problem.