python在nlp中解析语法树

Question

I wonder whether there is a convenient module for working with parse tree in python

for example, this is a part of the parse tree

(ROOT
          (S
          (NP
          (NP (NN sent1534))
          (: :)
          (NP (NNP Lancaster))
          (, ,)
          (NP
          (NP (DT a) (NN farming) (NN town))
          (PP (IN of)
          (NP (CD 3))))
          (, ,)
          (NP (CD 400))

I am interested in extracting the path on the tree from one specific word to another specific word, in addition it would be great two know whether two words share the same NP, VP, etc.

If you know any good module for parsing parse tree, please let me know.

Answer 1

NLTK is the most popular package for parse trees. See chapter 8 in the book .