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12

python-nltk on Ubuntu 12.04 LTS: nltk.download('brown') results in HTML error 401

rated 0 times [ 12] [ 0] / answers: 1 / hits: 9485 / 2 Years ago, sun, april 24, 2022, 10:01:08

I have installed python-nltk on Ubuntu Server 12.04 using apt-get.

But when I try to download a corpus, I get the following error:

$ python

Python 2.7.3 (default, Feb 27 2014, 19:58:35)

[GCC 4.6.3] on linux2

Type "help", "copyright", "credits" or "license" for more information.

>>> import nltk

>>> nltk.download('brown')

[nltk_data] Error loading brown: HTTP Error 401: Authorization

[nltk_data]     Required

False

Am I missing some configuration or additional package?

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jokaned

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1 Year ago

answered 2 Years ago inciplyies · Accepted Answer

The DEFAULT_URL used in downloader.py of the Ubuntu packaged version still uses:

DEFAULT_URL = 'http://nltk.googlecode.com/svn/trunk/nltk_data/index.xml'

But the current data server is:

DEFAULT_URL = "http://nltk.github.com/nltk_data/"

You can of course install from source or... modify your already installed version to point to the new server like this:

 sudo perl -pi -e 's#DEFAULT_URL = .*#DEFAULT_URL = "http://nltk.github.com/nltk_data/"#' /usr/lib/python2.7/dist-packages/nltk/downloader.py

You can then install the "brown" corpus:

$ python

Python 2.7.6 (default, Mar 22 2014, 22:59:56) 

[GCC 4.8.2] on linux2

Type "help", "copyright", "credits" or "license" for more information.

>>> import nltk

>>> nltk.download('brown')

[nltk_data] Downloading package 'brown' to /home/sylvain/nltk_data...

[nltk_data]   Unzipping corpora/brown.zip.

True

>>> from nltk.corpus import brown

>>> brown.words()

['The', 'Fulton', 'County', 'Grand', 'Jury', 'said', ...]

>>>