pyblosxom-users

[pyblosxom-users] Solving the 500 Internal error from ImportError

[Brianna L. <bri...@gm...>]

Hi,

I'm new to Pyblosxom but have some Python experience.

I managed to get Pyblosxom 1.4.3 up and running by following
<http://pyblosxom.sourceforge.net/1.4/manual/install_cgi.html> but
putting config.py and pyblosxom.cgi in my base dir. It worked fine
until I tried to click on the permalink to my first test entry. The
permalink went to "http://domain.com/first-post.html" and not
surprisingly it 404ed.

So I thought OK, maybe I was trying to be too clever, and I should put
my config.py and pyblosxom.cgi in a cgi-bin dir after all. (I have no
idea what difference it makes, CGI is one thing I know nothing about.
I use Dreamhost shared hosting and I was just taking a punt that it
would work at all. :))

So I created the cgi-bin directory and moved config.py and
pyblosxom.cgi there, and made my nice relative paths in config.py into
absolute paths.

Running ./pyblosxom.cgi in the command line works without
show-stopping complaint, but the website produces a 500 error thanks
to not being able to import the right script.

http://laugher.id.au/cgi-bin/pyblosxom.cgi

I have the codebase parameter set. I tried running python from the
cgi-bin dir, doing this:

>>> py = {}
>>> py["codebase"] = "/path/to/pyblosxom-1.4.3/"
>>> import os, sys
>>> sys.path.insert(0,py['codebase'])
>>> sys.path
['/path/to/pyblosxom-1.4.3/', '', '/usr/lib/python23.zip',
'/usr/lib/python2.3', '/usr/lib/python2.3/plat-linux2',
'/usr/lib/python2.3/lib-tk', '/usr/lib/python2.3/lib-dynload',
'/usr/local/lib/python2.3/site-packages',
'/usr/lib/python2.3/site-packages',
'/usr/lib/python2.3/site-packages/Numeric',
'/usr/lib/python2.3/site-packages/PIL']
>>> from Pyblosxom.pyblosxom import PyBlosxom
>>>
(/path/to/ changed for posting here, obviously)

OK, so that works!

Command-line pyblosxom.cgi works, why wouldn't the web one?

Is there some kind of CGI reset thing I can try?

Any theories would be welcome :)

thanks,
Brianna


-- 
They've just been waiting in a mountain for the right moment:
http://modernthings.org/

Re: [pyblosxom-users] Solving the 500 Internal error from ImportError

[will <wi...@bl...>]

Brianna Laugher wrote:
> 
> I managed to get Pyblosxom 1.4.3 up and running by following
> <http://pyblosxom.sourceforge.net/1.4/manual/install_cgi.html> but
> putting config.py and pyblosxom.cgi in my base dir. It worked fine
> until I tried to click on the permalink to my first test entry. The
> permalink went to "http://domain.com/first-post.html" and not
> surprisingly it 404ed.
> 
> So I thought OK, maybe I was trying to be too clever, and I should put
> my config.py and pyblosxom.cgi in a cgi-bin dir after all. (I have no
> idea what difference it makes, CGI is one thing I know nothing about.
> I use Dreamhost shared hosting and I was just taking a punt that it
> would work at all. :))

CGI is a protocol that allows the web-server to execute processes on the 
server in a specified environment and return the resulting stdout as the 
response to the browser's request.

More specifically, the web-server sets up a bunch of environment 
variables and then runs pyblosxom.cgi in that environment.  That's it.

There are a couple of problems this creates:

1. it's very possible that the environment the web-server executes 
PyBlosxom in is different in some/many ways from the environment that 
you as a user can execute PyBlosxom in on the command line

2. it's often difficult to figure out what the web-server is doing 
internally to create the environment


> So I created the cgi-bin directory and moved config.py and
> pyblosxom.cgi there, and made my nice relative paths in config.py into
> absolute paths.
> 
> Running ./pyblosxom.cgi in the command line works without
> show-stopping complaint, but the website produces a 500 error thanks
> to not being able to import the right script.

When you say "thanks to not being able to import the right script", what 
error messages are you seeing that draw you to that conclusion?


> http://laugher.id.au/cgi-bin/pyblosxom.cgi

This url gives me a 404.

If you can let us know what the specific error messages are and/or give 
us a url that executes PyBlosxom, I can figure more out from that.

/will