NLTK corpus: Remove stop words from a given text

NLTK corpus: Exercise-4 with Solution

Write a Python NLTK program to remove stop words from a given text.

Sample Solution:

Python Code :

from nltk.corpus import stopwords
stoplist = stopwords.words('english')
text = '''
In computing, stop words are words which are filtered out before or after 
processing of natural language data (text). Though "stop words" usually 
refers to the most common words in a language, there is no single universal 
list of stop words used by all natural language processing tools, and 
indeed not all tools even use such a list. Some tools specifically avoid 
removing these stop words to support phrase search.
'''
print("\nOriginal string:")
print(text)
clean_word_list = [word for word in text.split() if word not in stoplist]
print("\nAfter removing stop words from the said text:")
print(clean_word_list)

Sample Output:

Original string:

In computing, stop words are words which are filtered out before or after 
processing of natural language data (text). Though "stop words" usually 
refers to the most common words in a language, there is no single universal 
list of stop words used by all natural language processing tools, and 
indeed not all tools even use such a list. Some tools specifically avoid 
removing these stop words to support phrase search.


After removing stop words from the said text:
['In', 'computing,', 'stop', 'words', 'words', 'filtered', 'processing', 'natural', 'language', 'data', '(text).', 'Though', '"stop', 'words"', 'usually', 'refers', 'common', 'words', 'language,', 'single', 'universal', 'list', 'stop', 'words', 'used', 'natural', 'language', 'processing', 'tools,', 'indeed', 'tools', 'even', 'use', 'list.', 'Some', 'tools', 'specifically', 'avoid', 'removing', 'stop', 'words', 'support', 'phrase', 'search.']

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