[mod_python] How to make mod_python (Win32) not to rely onregistrykey?

John Keyes john.keyes at secantus.com
Tue Jun 27 05:07:46 EDT 2006

I think he can still do it if he launches apache from a batch
file.  Inside this batch file set the PYTHON_HOME.  This
is the setup I use for an application I need to distribute
across machines, but do not want to make the installer
more complicated than a basic unzip.

Here's an example batch file that I use:

== SOF ==

set PATH=C:\Python;%PATH%
set PYTHONHOME=C:\Python

start "c:\Apache\bin\apache.exe

== EOF ==

-John K

Graham Dumpleton wrote:
> For what he was trying to do, this was not an option. See:
>   http://www.modpython.org/pipermail/mod_python/2006-June/021453.html
>   http://www.modpython.org/pipermail/mod_python/2006-June/021456.html
> In short, he wants to be able to run stuff off a USB drive and avoid
> having to make modifications to the Win32 registry or anywhere'
> else outside of the Apache configuration itself.
> I unfortunately don't know anything about how Python is configured
> on Win32 so it knows where to find things.
> If anyone else has suggestions, would be appreciated.
> Graham
> John Keyes wrote ..
>> Sanja,
>> Try setting the PYTHON_HOME environment variable:
>>    set PYTHON_HOME=c:/Python24
>> -John K
>> Graham Dumpleton wrote:
>>> sanja at bougakov.com wrote ..
>>>> Hello, Graham,
>>>> The problem is that adding the
>>>>    PythonPath "sys.path +
>>>> ['C:/Python24/Lib','C:/Python24/Lib/mod_python','C:/Python24/DLLs','C:/Python24/Lib/lib-tk']"
>>>> line in httpd.conf doesn't help - I still get the
>>>>   [Mon Jun 26 15:56:04 2006] [error] [client] python_handler:
>>>>   make_obcallback returned no obCallBack!
>>>> in Apache's error.log file. But when I restore the
>>>> HKCU\Software\Python\PythonCore\2.4\PythonPath Registry hive and restart
>>>> Apache, everything works OK.
>>> I don't know what happens on Win32, but on UNIX mod_python gets
>>> installed in a 'site-packages' directory and the 'site-packages'
>>> directory only would be in sys.path, and not the mod_python package
>>> directory.
>>> Where is the mod_python package installed?
>>> Does the user which Apache runs as have permission to read the stuff
>> in
>>> the mod_python package directory?
>>> Can people who know Win32 better than I help out at this point.
>>> Graham
>>>>> The SetEnv directive only affects environment variables inherited by
>>>>> CGI scripts. It does not affect the environment of Apache itself and
>>>>> thus does not affect the environment of mod_python. In order to add
>>>>> extra directories into the Python module search path, use the
>>>>> PythonPath directive as documented in the mod_python documentation.
>>>>> Graham
>>>>> On 23/06/2006, at 8:00 PM, sanja at bougakov.com wrote:
>>>>>> The problem is that mod_python doesn't look at these env.
>>>>>> variables. It checks only HKCU\Software\Python registry hive.
>>>>>> If I remove it and restart Apache, I get "error 500".
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