template is calling 2 times

Fri Jul 7 17:08:45 EDT 2006

sanjeevdivekar a écrit :
> hi,
> 
> i am newbie to python so i am trying to learn mod_python as my new
> development kit for my small web apps.
> 
> i am getting strange result

Nothing strange here AFAICT.

> can anybody explain me.
> index.py
> *********************************************************************************************
> from mod_python import apache
> from mod_python import psp
> from mod_python import util
> 
> def index(req, para=None):
>     tmpl = psp.PSP(req, filename='a.html')
>     tmpl.run(vars = {'para':para})
>     tmpl.run()

Here, you call tmpl.run() two time, the first time with a dict having an 
entry named 'param', the second time without it.

> a.htm
> *********************************************************************************************
(snip)
> <BODY>
> <h1><%=para%></h1>

And here you try to display something named "para". I don't have much 
knowledge of PSP, but I have enough experience to assert this try to get 
the entry named "param" from the dict passed to tmpl.run().

(snip)

> Result
(snip)
> File "E:\Apache Group\Apache2\htdocs\test\index.py", line 8, in index
> tmpl.run()

Here we are : line 8 of index.py, your second call to tmpl.run() without 
the dict.
> File "E:\Python24\Lib\site-packages\mod_python\psp.py", line 213, in
> run exec code in global_scope
> File "E:\Apache Group\Apache2\htdocs\test\a.html", line 1, in ?
> NameError: name 'para' is not defined

and here the tentative to get this name from the dict.

Doesn't seem so strange to me. Note that I could be wrong - you'd better 
check in PSP documentation - but I think I'd try commenting out the 
second (and AFAICT useless) call to tmpl.run().