NLP: Mapping Penn treebank and Brown corpus, to Universal PoS Tags
NLTK contains options for retrieving brown, treebank corpora with universal tags, instead of their own tagging schemes.

nltk.corpus.treebank.tagged_words(tagset='universal')


instead of:

nltk.corpus.treebank.tagged_words()


Similarly:

nltk.corpus.brown.tagged_words(tagset='universal')
nltk.corpus.nps_chat.tagged_words(tagset='universal')
nltk.corpus.conll2000.tagged_words(tagset='universal')


As far as I am aware, none of the other tagged corpora support the universal tagset option.