The error message is telling you that it's already installed in python 3.5
Have you downloaded and installed the corpus?
if not, see: http://www.nltk.org/data.html
I have never used it on an Apple (don't own one) and never from a shell.
Have you downloaded and installed the corpus?
if not, see: http://www.nltk.org/data.html
I have never used it on an Apple (don't own one) and never from a shell.