Hi Eric,

I think the problem is that I forgot to add the halo_analysis package to the setup.py in yt/analysis_modules, so if you installed yt with "python setup.py install", that package didn't get included.  This is something I'll fix right away, but if you switch to "python setup.py develop", it should work fine.

Britton

On Fri, Aug 15, 2014 at 1:53 PM, Eric Hallman <hallman13@gmail.com> wrote:

Good morning,

   I'm getting back to using yt for cosmological analysis after a layoff, and I'm now on yt-3.0, which I hadn't been using in the past.  So I needed to do a quick halo finding on a small dataset, and the cookbook script fails immediately.  I'm absolutely certain I'm doing something stupid, but I don't know what it is, since I've only issued two commands, they are the first two in the script, and they fail.  Can someone tell me what I'm doing wrong?  My problem here is that this error is so basic to the operation that I'm not sure exactly how to dig into it.

Thanks.

Here are the commands, and the output: 

>>> import yt

>>> from yt.analysis_modules.halo_analysis.api import HaloCatalog

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

ImportError: No module named halo_analysis.api

And here is my version info:

torque:RD0009 hallman$ yt version

yt module located at:

    /Users/hallman/work/yt-x86_64/lib/python2.7/site-packages/yt-3.0-py2.7-macosx-10.4-x86_64.egg

The supplemental repositories are located at:

    /Users/hallman/work/yt-x86_64/src/yt-supplemental

The current version and changeset for the code is:

---

Version = 3.0

Changeset = cf867eab0515 stable

---

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