On May 25, 3:42 am, Sam Chuparkoff <s...@sadach.org> wrote:
> On Sun, 2009-05-24 at 13:27 -0300, Gabriel wrote:
> > The problem was with one of the applications 'profile'. It seems it
> > already exists somewhere.
>
> Correct, there is a standard python module called profile.
>
> $ python
> Python 2.6.2 (r262:71600, May 7 2009, 21:32:12)
> [GCC 4.1.2 (Gentoo 4.1.2 p1.0.2)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.>>>
> import profile.urls
>
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> ImportError: No module named urls
>
>
>
> This looks familiar, right? It is not good to name apps to conflict
> with standard python modules; someday someone will be confused :).
>
> The reason python found the standard module instead of your 'profile'
> module is that you appended your paths to the end of sys.path. If you
> had added them to the beginning of the list, python would have found
> your 'profile' module instead of the standard one. Example:
>
> workspace = '/home/gabriel/pywks'
> project = '/home/gabriel/pywks/vertaal'
> sys.path = [workspace, project] + sys.path
>
> Hope that makes sense.
FWIW, the reason that mod_wsgi documentation uses append() is
specifically so that it will highlight when people use module names
that conflict with standard modules. But then, Django is part of the
problem here in that it allows/encourages people to not use site name
in package import path. If a package path was always used that
included site name this wouldn't all tend to be a problem and it
wouldn't be necessary to be adding the directory settings.py file is
in to sys.path. Unfortunately people drop the site part of package
import with the thought that it makes reuse of code between sites
easier at some point.
Graham
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