In python nltk I am trying to get parts of speach of a word by using pos_tag. but i am getting inaccurate output? Tell me the better tagger? -

import nltk nltk import word_tokenizer  w="cat" word=nltk.word_tokenize(w) print nltk.pos_tag(word)  output:[('cat','in')] 

but cat noun,but returns in(conjunction).

pos tagging doesn't work out of sentence context. feed whole sentence pos_tag instead of single word, try again. if doesn't work, use nltk.download() fetch better pos tagging model , run that.

if need pos tags single word, try wordnet:

in [9]: nltk.corpus.wordnet.synsets('cat') out[9]:  [synset('cat.n.01'),  synset('guy.n.01'),  synset('cat.n.03'),  synset('kat.n.01'),  synset("cat-o'-nine-tails.n.01"),  synset('caterpillar.n.02'),  synset('big_cat.n.01'),  synset('computerized_tomography.n.01'),  synset('cat.v.01'),  synset('vomit.v.01')] 

(as can see, may have filter these.)