You will use nltk to explore the Herman Melville novel Moby Dick. Write the python code for answering the following questions:

Find how many tokens are unique after removing stopwords.

you can use follwing sample code

from nltk.corpus import stopwords stop_words = set(stopwords.words('english'))

def example_three():

filtered_sentence = [w for w in raw if not w.lower() in stop_words] filtered_sentence = [] for w in raw: if w not in stop_words: filtered_sentence.append(w) return len(set(nltk.word_tokenize(filtered_sentence)))

example_three()