[Chicago] Install problems with numpy via pip on Snow Leopard (Mac OS X 10.6.x)

Skip Montanaro skip at pobox.com
Wed Feb 20 14:48:14 CET 2013

> do
> file /Users/skip/django/mysite/venv/lib/python2.7/site-packages/numpy/core/multiarray.so
> At least that will tell you what architecture the shared object was
> built for.

Thanks, Ken.  That was the clue.  I had run file against that and it
looked fine, however, I'd failed to run file against my Python
interpreter.  They don't match.  Looks like I have a 64-bit numpy and
32-bit Python:

(venv)mysite% file /Users/skip/django/mysite/venv/bin/python
/Users/skip/django/mysite/venv/bin/python: Mach-O executable i386
(venv)mysite% file
Mach-O 64-bit bundle x86_64

So, it appears to be time to refresh my Python interpreter.  Is there
an easy way to update the Python install inside an existing


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