R: R: R: [mod_python] Servlet Loading problem 1 year later

On 23/05/2006, at 11:30 PM, Manera, Villiam wrote:

> Ok! I have PythonHandler mod_python.servlet, and only 5 modules with:
>> From mod_python.servlet import * so no hard work for fix.
>
> Instead a lot with:
> from mod_python.servlet import HTMLPage (HTMLPage inherit from  
> Servlet)
>
> Sorry for my ignorance, but I have to fix with apache.import_module 
> () also those that import HTMPLPage?

Yes. The original link I pointed you at showed exactly that as an  
example.

   http://www.modpython.org/pipermail/mod_python/2004-October/ 
016596.html

   # from servlet import HTMLPage

   from mod_python import apache
   servlet = apache.import_module("servlet")
   HTMLPage = servlet.HTMLPage

Graham

> -----Messaggio originale-----
> Da: Graham Dumpleton [mailto:grahamd at dscpl.com.au]
> Inviato: martedì 23 maggio 2006 13.09
> A: Manera, Villiam
> Cc: mod_python at modpython... list
> Oggetto: Re: R: R: [mod_python] Servlet Loading problem 1 year later
>
>
> On 23/05/2006, at 8:15 PM, Manera, Villiam wrote:
>
>> I don't use apache.import_module() in any of my own modules. The
>> problem arise in developer (linux:RH3 EL mod_python 3.2.8)
>> And in the production          (linux:RH3 EL mod_python 3.1.5)
>>
>> If I right understand the article only in mod_python 3.2.8 the new
>> module loding is in place.
>>
>> Villiam
>
> If you are specifying:
>
>    PythonHandler mod_python.servlet
>
> or:
>
>    PythonHandler servlet
>
> if you put the mpservlets code in your handler directory, then you  
> are.
>
> This is because the PythonHandler directive uses "apache.import_module
> ()".
>
> All it then takes to cause problems is for you to use:
>
>    import mod_python.servlet
>    from mod_python import servlet
>
> or:
>
>    import servlet
>
> depending on whether mpservlets installed centrally or in handler
> directory.
>
> If this is the case, you might solve the problem by using
> "apache.import_module()"
> to import "mod_python.servlet" etc.
>
> Graham
>
>> On 22/05/2006 at 22:56 Graham Dumpleton wrote:
>>
>>> Please keep followups on list.
>>
>>> You don't need to actually touch servlet.py to get problems if you
>> happen to be using "import" and "apache.import_module ()" on the same
>> module at different times. This is because of an issue in the
>> mod_python
>> importer. See:
>>
>>>
>> http://www.dscpl.com.au/articles/modpython-003.html#redundant-
>> module-loa
>> ding
>>
>>> Sorry for quick reply, in a rush. I'll try and comment later on the
>> whole issue of checking subclass types and caching.
>>
>>> Graham
>>
>> On 22/05/2006, at 11:06 PM, Manera, Villiam wrote:
>>
>>> Yes, i knows that it could be happened if I touch servlet.py becouse
>>> Daniel Popowiwich told me 1 year ago.
>>>
>>> ....
>