IndexError: only integers, slices (`:`), ellipsis (`...`), numpy.newaxis (`None`) and integer or boolean arrays are valid indices

[saurabhmathur96]

IndexError: only integers, slices (`:`), ellipsis (`...`), numpy.newaxis (`None`) and integer or boolean arrays are valid indices

[saurabhmathur96]

It seems you are having trouble making the Cosine Similarity notebook work.

The code in this repository is at least two years old and written in python 2.7. Since some Python/SciPy/NumPy interfaces and defaults have changed, parts of the code will break if you run it with the latest Python/SciPy/NumPy versions.

In this particular case, the keys method of a dict returns a list in Python 2 and an object of dict_keys in Python 3. NumPy Arrays can be indexed by lists but not by dict_keys objects. Hence, you get an error. Replacing rated_movies = ratings.keys() with rated_movies = list(ratings.keys()) and top_n = [ratings.keys()[i] for i in similar_movies[:n]]with top_n = [rated_movies[i] for i in similar_movies[:n]] should make the notebook work with Python 3.

[shubhamtunwal97]

Thanks it worked.!!