In this recipe, we'll do chunking and tagging over an execnet gateway. This will be very similar to the tagging in the previous recipe, but we'll be sending two objects instead of one, and we will be receiving a Tree instead of a list, which requires pickling and unpickling for serialization.
The setup code is very similar to the last recipe, and we'll use the same pickled tagger as well. First, we'll pickle the default chunker used by nltk.chunk.ne_chunk(), though any chunker would do. Next, we make a gateway for the remote_chunk module, get a channel, and send the pickled tagger and chunker over. Then, we receive a pickled Tree, which we can unpickle and inspect to see the result. Finally, we exit the gateway:
>>> import execnet, remote_chunk >>> import nltk.data, nltk.tag, nltk.chunk >>> import pickle >>> from nltk.corpus import treebank_chunk...
