python nosetests won't work

Question

I was learning Python from 'learning python the hard way' and I was stuck at exercise 46 (http://learnpythonthehardway.org/book/ex46.html).

I installed pip and then the nose package and whenever i run nosetest now as in the example it doesn't work. This is the error I get:

Traceback (most recent call last):
File "/usr/local/bin/nosetests", line 5, in <module>
    from pkg_resources import load_entry_point
File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2807, in <module>
    parse_requirements(__requires__), Environment()
File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 594, in resolve
    raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: nose==1.3.0

I googled about this but couldn't find an answer. I am on a Lubuntu 13.04 desktop.

Answer 1

You need to install a version of nose equal to 1.3.0 (maybe the nose version that you installed is not 1.3.0?)

You can find out what version of nose you have installed with

>>> import nose
>>> nose.__version__
'1.3.0'

Using pip this is as simple as (if you already have nose installed then you will want to use the --upgrade flag)

pip install --upgrade nose==1.3.0

or even direct from the website

pip install -Iv https://pypi.python.org/packages/source/n/nose/nose-1.3.0.tar.gz#md5=95d6d32b9d6b029c3c65674bd9e7eabe