How to Find the Number of Words or Sentences in a String in Python using the NLTK Module

In this article, we show how to find the number of words or sentences in a string in Python using the NLTK module.

The NLTK module is the natural language toolkit module.

We can use it to tokenize strings into words or sentences.

We can then use the len() function to determine the number of words or sentences in a string.

So, again, we first tokenize the string into words or sentences. Then use the len() function to find the number of words or sentences in the string.

How to Find the Number of Words in a String

We first find the number of words in a string.

This requires us to tokenize the string into words. And then use the len() to find the number of words in the string.

This is shown below.

>>> import nltk >>> string= 'Python has many great modules to use for various programming projects' >>> words= nltk.word_tokenize(string) >>> length= len(words) >>> length 11

So let's now go over the code above.

We first have to import the ntlk module.

We then have a string, which we will analyze.

We then create a variable, words, which contains the tokenized words of the string.

We then find out how many words are in the words variable by using the len() function.

We then output the length, which is 11. This string contains 11 words.

How to Find the Number of Sentences in a String

Now we will find the number of sentences in a string.

We tokenize the string into sentences. Then use the len() function to find the number of sentences.

This is shown below.

>>> import nltk >>> paragraph= """I ate fruit the entire day. For breakfast, I had dates. For lunch, I had mangoes. For dinner, I had cantaloupe.""" >>> sentences= nltk.sent_tokenize(paragraph) >>> length= len(sentences) >>> length 4

So in the code above, we have a variable, paragraph, that contains a few sentences.

We then create a variable, sentences, which contains the string tokenized into sentences.

We then find the length of the sentences using the len() function, which gives us the number of sentences in the string.

So in Python using the nltk module, we can tokenize strings either into words or sentences. We then simply use the len() function to find the number of words or sentences in the string.

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