3


import nltk

from nltk.stem import PorterStemmer

from nltk.tokenize import word_tokenize

nltk.download('punkt')

def stem_text(text):

porter_stemmer = PorterStemmer()

words = word_tokenize(text)

stemmed_words = [porter_stemmer.stem(word) for word in words]

stemmed_text = ' '.join(stemmed_words)

return stemmed_text

text = "NLTK is a leading platform for building Python programs to work with human language

data."

stemmed_text = stem_text(text)

print(stemmed_text

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