[mod_python] Question about vampire module loading

Hi,

I have been experimenting with vampire a little, and having problems
with module loading. I store handlers in $documentroot and some other
handlers in $documentroot/modules.

Here is my rough directory structure:
$documentroot:
index.html index.py login.html login.py modules register.html register.py

$documentroot/modules:
SessionManagement.py Settings.py UserManagement.py

In my login.py file, I import the module using vampire importModule mechanism:

config = vampire.loadConfig(__req__, ".vampire")
directory = config.get("Modules", "common")
UserManagement = vampire.importModule("UserManagement", directory)
SessionManagement = vampire.importModule("SessionManagement", directory)
--

In my UserManagement.py, I also need some stuff from
SessionManagement, so I also do:

config = vampire.loadConfig(__req__, ".vampire")
directory = config.get("Modules", "common")
SessionManagement = vampire.importModule("SessionManagement", directory)
Settings = vampire.importModule("Settings", directory)
--

My handler_html in login.py:

def handler_html(req, error=''):
  if not os.path.exists(req.filename):
    return apache.DECLINED

  # Immediately redirect to the main page if session exists
  session = SessionManagement.checkSession(req)
  if session['isAuthorized'] and session['username']:
    util.redirect(req, 'main.html')

  message = ''
  if error == 'invalid':
    message = 'invalid username/password'
    
  def renderTemplate(template, error):
    template.result.content = error
  
  html = open(req.filename, 'r')
  template = HTMLTemplate.Template(renderTemplate, html.read())
  html.close()

def handler_html(req, error=''):
  if not os.path.exists(req.filename):
    return apache.DECLINED

  # Immediately redirect to the main page if session exists
  session = SessionManagement.checkSession(req)
  if session['isAuthorized'] and session['username']:
    util.redirect(req, 'main.html')

  message = '';
  if error == 'invalid':
    message = 'invalid username/password'
    
  def renderTemplate(template, error):
    template.result.content = error
  
  html = open(req.filename, 'r')
  template = HTMLTemplate.Template(renderTemplate, html.read())
  html.close()
--

My httpd.conf:

<Directory "/home/www/testing">
        PythonOption VampireDirectoryIndex index.html
        SetHandler python-program
        PythonHandler vampire
        PythonPath 'sys.path'
#       PythonOption VampireDefaultHandlers On
        PythonDebug On
        <Files ~ "^\.vampire">
          Order allow,deny
          deny from all
        </Files>
</Directory>
--

When accessing login.html, I get this error:
Mod_python error: "PythonHandler vampire"

Traceback (most recent call last):

  File "/usr/lib/python2.3/site-packages/mod_python/apache.py", line
299, in HandlerDispatch
    result = object(req)

  File "/usr/lib/python2.3/site-packages/vampire/lookup.py", line 585,
in _handler
    module = _import(req,file)

  File "/usr/lib/python2.3/site-packages/vampire/lookup.py", line 53, in _import
    module = _moduleCache.importModule(name,directory,req)

  File "/usr/lib/python2.3/site-packages/vampire/cache.py", line 181,
in importModule
    execfile(file,module.__dict__)

  File "/home/www/testing/login.py", line 9, in ?
    UserManagement = vampire.importModule("UserManagement", directory)

  File "/usr/lib/python2.3/site-packages/vampire/cache.py", line 306,
in importModule
    return _moduleCache.importModule(name,path,req)

  File "/usr/lib/python2.3/site-packages/vampire/cache.py", line 181,
in importModule
    execfile(file,module.__dict__)

  File "/home/www/testing/modules/UserManagement.py", line 8, in ?
    config = vampire.loadConfig(__req__, ".vampire")

  File "/usr/lib/python2.3/site-packages/vampire/config.py", line 263,
in loadConfig
    return _configCache.loadConfig(req,name)

  File "/usr/lib/python2.3/site-packages/vampire/config.py", line 198,
in loadConfig
    req.vampire = { "config": {} }

AttributeError: 'NoneType' object has no attribute 'vampire'
--

I was wondering whether what I am doing is allowed or not. What should
I do to get around it? I am using vampire-1.5. Python, mod_python, and
vampire are still pretty new to me. Please let me know if you need any
further information. Thank you very much in advance.

Best regards,
Keerati