I see the answer it’s “android_clean.append(row)” while my code is “android_clean.append(n_reviews)” and it still get correct result. From what I understand, list android_clean is to add the highest amount of reviews, so it should be “android_clean.append(n_reviews)”, isn’t it?
It’s a little difficult to say without more of your code for context but there is a significant difference between android_clean.append(row) and android_clean.append(n_reviews) since n_reviews is just one value from row. Specifically, n_reviews = float(row[3]).
The instructions for this page says:
Append the entire row to the android_clean list (which will eventually be a list of list and store our cleaned data set).
Therefore, we want to use android_clean.append(row) because this will append the entire row and not just the number of reviews.