knn - when I run the code below,I am getting an error as "index 0 is out of bounds for axis 0 with size 0"

Question

This is my code below

def recomend_book(book_name):
    b_id = np.where(books_rating_pivot.index == book_name)[0][0]
    _, recommendations = model.kneighbors(books_rating_pivot.iloc[b_id,:].values.reshape(1,-1))
    for i in range(len(recommendations)):
        if i == 0:
            print(f"For book "{book_name}" is recommended")
            if not i:
                print(books_rating_pivot.index[recommendations[i]])

recomend_book('Harry')

Answer 1

等待大神答复