[mod_python] PythonImport: Can someone please draw a diagram for this idiot?

Jorey Bump wrote:
> Jim Gallacher wrote:
> 
>> In answer to my own in question, PythonImport does work and there is 
>> no bug. Re-reading the docs reveals this small detail which I and 
>> others may have overlooked - the context for the directive. 
>> PythonImport only works in the server config context. Quoting from the 
>> apache docs 
>> (http://httpd.apache.org/docs/2.0/mod/directive-dict.html#Context)
>>
>> """
>> server config
>>     This means that the directive may be used in the server 
>> configuration files (e.g., httpd.conf), but not within any 
>> <VirtualHost> or <Directory> containers. It is not allowed in 
>> .htaccess files at all.
>> """
>>
>> I'll update the docs to make this a little more explicit, since it's 
>> easy to overlook. I know I did. :)
>>
>> Hope that helps.
> 
> 
> Yes, it does. For a simple demo, put a module in the default module 
> search path, such as a directory shown in sys.path when running python 
> from the command line. PythonPath directives in httpd.conf will not have 
> taken effect when PythonImport runs (I used 
> /usr/lib/python2.4/site-packages/ for my test).
> 
> # mpglobal.py
> 
> import time
> 
> f = open('tmp/atest', 'w')
> f.write(str(time.time()))
> f.close()
> 
> foo = 'testing'
> 
> 
> Then in httpd.conf (using your own interpreter name):
> 
> PythonImport mpglobal www.example.com
> 
> On Linux, restarting apache creates and/or updates /tmp/atest, verifying 
> that it works.
> 
> But, like the OP, I can't figure out how to access foo (or mpglobal.foo) 
> in my published module.

I don't know if this is the correct way, but I tried it and it works:

import sys
mpglobal = sys.modules['mpglobal']

def index(req):
     req.write('Hello world\n')
     req.write(mpglobal.foo)

Jim


> Also, here is a better module to run under Publisher to check various 
> settings, including the name of the interpreter (and I remembered to 
> include sys.path this time!):
> 
> """
> info.py
> 
> Display various settings/variables under mod_python.publisher.
> 
> Access at:
> 
>  http://host/somedir/info.py/index
> 
> or:
> 
>  http://host/somedir/info/
> 
> To check form variables, set form action to:
> 
>  http://host/somedir/info.py/showformdata
> 
> """
> 
> from mod_python import apache
> import os
> import sys
> 
> topdir = []
> for i in dir():
>     topdir.append(i)
> 
> def showformdata(req):
>     formdata = {}
>     if req.form.keys():
>         for key in req.form.keys():
>             formdata[key] = req.form[key]
>         return formdata
>     else:
>         return "no form data"
> 
> def index(req):
>     d = []
>     d.append("Interpreter Name (req.interpreter):" )
>     d.append(req.interpreter)
>     d.append("\nsys.path:")
>     d.append('\n'.join(sys.path))
>     d.append("\nRequest (req.the_request):")
>     d.append(req.the_request)
>     d.append("\nProtocol (req.protocol):")
>     d.append(req.protocol)
>     d.append("\nMethod (req.method):")
>     d.append(req.method)
>     d.append("\nreq.subprocess_env:")
>     d.extend(["%s: %s" % (i, req.subprocess_env[i]) for i in 
> req.subprocess_env.keys()])
>     d.append("\nreq.filename:")
>     d.append(req.filename)
>     d.append("\nreq.path_info:")
>     d.append(req.path_info)
>     d.append("\nenvironment PATH:")
>     d.append(os.environ['PATH'])
>     d.append("\ndir():")
>     d.extend(topdir)
>     return "\n".join(d)
> 
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