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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Previous: Write a Python NLTK program to check the list of stopwords in various languages.
Next: Write a Python NLTK program to omit some given stop words from the stopwords list.
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Find current directory and file's directory:
To get the full path to the directory a Python file is contained in, write this in that file:
import os dir_path = os.path.dirname(os.path.realpath(__file__))
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To get the current working directory use
import os cwd = os.getcwd()
Documentation references for the modules, constants and functions used above:
- The os and os.path modules.
- The __file__ constant
- os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
- os.path.dirname(path) (returns "the directory name of pathname path")
- os.getcwd() (returns "a string representing the current working directory")
- os.chdir(path) ("change the current working directory to path")
Ref: https://bit.ly/3fy0R6m
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