[mod_python] ImportError: No module named linecache

Hi Marty,

Any chance you have multiple versions of python installed?

If so make sure the correct python is listed first in your PATH in the 
context of the user that runs apache.

Jim

Marty Alchin wrote:
> Hello all,
> 
> This is my first time venturing into the world of mod_python, and I'm
> having a bit of trouble getting it working. I'm trying to use it with
> Django and with Trac, but both have the same problem, so it seems like
> it's something with my mod_python setup in general.
> 
> Apache starts fine, but when I try to view either of the sites I set
> up with mod_python, I get a generic Internal Server Error, with the
> following in error_log:
> 
> [Sun Jun 24 10:55:16 2007] [error] make_obcallback: could not import
> mod_python.apache.\n
> Traceback (most recent call last):
>  File "/usr/local/lib/python2.4/site-packages/mod_python/apache.py",
> line 21, in ?
>    import traceback
>  File "/usr/local/lib/python2.4/traceback.py", line 3, in ?
>    import linecache
> ImportError: No module named linecache
> [Sun Jun 24 10:55:16 2007] [error] make_obcallback: Python path being
> used "['/usr/local/lib/python2.4/site-packages/setuptools-0.6c1-py2.4.egg',
> '/usr/local/lib/python2.4/site-packages/Django-0.95-py2.4.egg',
> '/usr/local/lib/python24.zip', '/usr/local/lib/python2.4',
> '/usr/local/lib/python2.4/plat-linux2',
> '/usr/local/lib/python2.4/lib-tk',
> '/usr/local/lib/python2.4/lib-dynload',
> '/usr/local/lib/python2.4/site-packages']".
> [Sun Jun 24 10:55:16 2007] [error] get_interpreter: no interpreter
> callback found.
> 
> But when I load up python interactively, it works just fine, loading
> both traceback and linecache individually:
> 
>>>> import traceback
>>>> import linecache
>>>>
> 
> I tried the post-install troubleshooting step[1] to provide additional
> information, but accessing that URL results in the same error listed
> above.
> 
> As this is my first foray into mod_python, I can't quite figure out
> what I'm doing wrong. Below is as much background information as I
> could think to include.
> 
> Apache:
> # /usr/local/apache2/bin/httpd -v
> Server version: Apache/2.2.2
> Server built:   May 12 2007 21:31:02
> 
> Mod_python:
>>>> import mod_python
>>>> mod_python.version
> '3.3.1'
> 
> Python:
> # python -V
> Python 2.4.3
> 
> VirtualHost config:
> <VirtualHost *:80>
> ServerName dev.mysite.com
> PythonPath "['/path/to/project'] + sys.path"
> SetHandler python-program
> PythonHandler django.core.handlers.modpython
> SetEnv DJANGO_SETTINGS_MODULE mysite.settings
> PythonDebug On
> 
> <Location /trac>
> SetHandler mod_python
> PythonHandler trac.web.modpython_frontend
> PythonOption TracEnv /path/to/env
> PythonOption TracUriRoot /trac
> </Location>
> </VirtualHost>
> 
> -Gul
> 
> [1] 
> http://www.modpython.org/live/mod_python-3.3.1/doc-html/inst-trouble.html
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