Word tokenization is the process of splitting a large sample of text into words. This is a requirement in natural language processing tasks where each word needs to be captured and subjected to further analysis like classifying and counting them for a particular sentiment etc. The Natural Language Tool kit(NLTK) is a library used to achieve this. Install NLTK before proceeding with the python program for word tokenization.
conda install -c anaconda nltk
Next we use the word_tokenize method to split the paragraph into individual words.
import nltk word_data = "It originated from the idea that there are readers who prefer learning new skills from the comforts of their drawing rooms" nltk_tokens = nltk.word_tokenize(word_data) print (nltk_tokens)
When we execute the above code, it produces the following result.
['It', 'originated', 'from', 'the', 'idea', 'that', 'there', 'are', 'readers', 'who', 'prefer', 'learning', 'new', 'skills', 'from', 'the', 'comforts', 'of', 'their', 'drawing', 'rooms']
Tokenizing Sentences
We can also tokenize the sentences in a paragraph like we tokenized the words. We use the method sent_tokenize to achieve this. Below is an example.
import nltk sentence_data = "Sun rises in the east. Sun sets in the west." nltk_tokens = nltk.sent_tokenize(sentence_data) print (nltk_tokens)
When we execute the above code, it produces the following result.
['Sun rises in the east.', 'Sun sets in the west.']
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