I tried to update my nltk data with nltk.download() but I got HTTP Error 401: Authorization Required.
When I traced the url in question, I found it in downloader.py
DEFAULT_URL = 'http://nltk.googlecode.com/svn/trunk/nltk_data/index.xml'
I then copied that URL and ran it in my browser to find out that it's asking me for a username and password. Here is a screen-shot.
Does anyone know how to solve this issue?
NLTK have moved from their googlecode site.
As noted in this question, nltk's new data server is located at http://nltk.github.com/nltk_data/. Just update the URL to the new location, and it should hopefully work.