Is it possible to edit NLTK's vader sentiment lexicon?

For anyone interested, this can also be achieved without having to manually edit the vader lexicon .txt file. Once loaded the lexicon is a normal dictionary with words as keys and scores as values. As provided by repoleved in this post:

from nltk.sentiment.vader import SentimentIntensityAnalyzer

new_words = {
    'foo': 2.0,
    'bar': -3.4,
}

SIA = SentimentIntensityAnalyzer()

SIA.lexicon.update(new_words)

If you wish to remove words, use the '.pop' function:

SIA = SentimentIntensityAnalyzer()

SIA.lexicon.pop('no')

I found the fix. I zipped the folder vader_lexicon that contains the txt file and the changes I applied is now the one being accessed.