[mod_python] apache2 won't load mod_python

Dave Britton dave at davebritton.com
Fri Mar 25 11:39:13 EST 2005

It turned out that there actually was another version of python that had 
been installed without my knowledge that was interfering with apache2 
finding the right path. I would never have suspected or found this without 
your clues. Once I removed it and rebuilt everything, my upgrade to apache2 
and mod_python 3 works.

Thanks for helping me track this down! I really appreciate it.

----- Original Message ----- 
From: "Graham Dumpleton" <grahamd at dscpl.com.au>
To: "Dave Britton" <dave at davebritton.com>
Cc: <nicolas at lehuen.com>; <mod_python at modpython.org>
Sent: Tuesday, March 22, 2005 4:13 PM
Subject: Re: [mod_python] apache2 won't load mod_python

> How many versions of Python are installed on your system? You appear to
> be trying to use the one in /usr/local, is that the one you actually
> want? When you configured Apache, did you tell it to use a particular
> version or simply use whatever it could find? Have you got PYTHONPATH
> set manually in your environment or that of Apache?
> Anyway, this particular sort of problem is generally the result of issues
> with there being multiple versions of Python on a system, or a missing
> or incomplete install of the Python side of the mod_python system. Go
> through each of the site-packages directories for each version of Python
> you have and see which have a mod_python directory, when the files were
> copied into the directory and try and work out which version of mod_python
> the files may be for. If a mod_python installation is 3.X, it will have
> psp.py in the Python mod_python package directory. Doing this may help
> clarify for you what went where and what version Apache might be trying
> to load.
> I wander whether the mod_python module when it is being loaded from
> Apache should dump out to the Apache error log the contents of sys.path.
> This may aid in debugging these sort of problems as right now it isn't
> easily detectable where Apache may be looking. The startup message may
> say which version of Python the Apache module was compiled against, but
> this is not necessarily a true indication of where it is looking for
> modules.
> BTW, also read:
>   http://www.modpython.org/FAQ/faqw.py?req=show&file=faq02.001.htp
> Also tell us what operating system you are using.
> Graham

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