NLP nltk error

[VTVL138]

In NLP-Exercise 3 if I import from nltk.corpus the stopwords and if I would like to get the english stopwords like this:
stopwords.words('english')

I get a LookupError, Resource stopwords not found. Is there an other way to get a direct access to the stopwords, or I should download this part of the package?

[bokae]

You should use nltk's download to get the stopword corpus.