[mod_python] publisher on psp

David Bear wrote ..
> I'm using the psp template formulation from the modpython web site.
> 
> I do not have any psp code in the template yet. The dispatcher code
> seems to be working. I have an html only file. I have an index.py
> file. In index.py I have a function called begin. The html template
> (which right now is only html) lives in documentroot/template. there
> is a graphic src image tag in that template that points to
> documentroot/images/my.jpg.  documentroot here means the directroy
> where index.py lives.
> 
> the problem is the image is never sent to the browser. I know it must
> be related to what document root is, and I assume the answer is found
> in some psp global variable...so, how do I construct my <img src="..">
> tag to properly find the jpg?

Calculating correct relative to URLs when using publisher is a PITA
because multiple URLs can refer to the same resource. See prior
commentary on this:

  http://www.modpython.org/pipermail/mod_python/2006-March/020501.html

The link includes code which may be of some use in at least
reliably calculating a relative URL to the directory the PythonHandler
directives was defined for. Knowing that, you can then extend
it to parent or sibling directories as appropriate using posixpath.join().

Graham