re.findall() is not returning all the Trigrams / ngrams in a sentence in Python

Asked Apr 09 '18 at 20:28

Active Apr 09 '18 at 20:28

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I am trying to get a list of all the trigrams in a sentence which does not have the starting of that sentence.

i wrote the following code :-

import re
s= "He was working on the table"
middle_trigram_list = re.findall("\s+[a-z]+\s[a-z]+\s[a-z]+\s+",s)
print (middle_trigram_list)
[' was working on ']

and i got the output only as [' was working on '] , i wonder why "working on the " was not included in the list.

Thanks!!

asked Apr 09 '18 at 20:28

Pushkar Padmnav

1

So you want overlapping results? – user3483203 Apr 09 '18 at 20:29
Consider using NLTK instead: https://stackoverflow.com/questions/24347029/python-nltk-bigrams-trigrams-fourgrams – DYZ Apr 09 '18 at 20:32
Thanks!! That was exactly what i was looking for . – Pushkar Padmnav Apr 09 '18 at 20:38

re.findall() is not returning all the Trigrams / ngrams in a sentence in Python

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