Mod_python error: "PythonHandler django.core.handlers.modpython"

Traceback (most recent call last):

  File "/usr/lib/python2.4/site-packages/mod_python/apache.py", line 299, in HandlerDispatch
    result = object(req)

  File "/usr/lib/python2.4/site-packages/django/core/handlers/modpython.py", line 228, in handler
    return ModPythonHandler()(req)

  File "/usr/lib/python2.4/site-packages/django/core/handlers/modpython.py", line 201, in __call__
    response = self.get_response(request)

  File "/usr/lib/python2.4/site-packages/django/core/handlers/base.py", line 134, in get_response
    return self.handle_uncaught_exception(request, resolver, exc_info)

  File "/usr/lib/python2.4/site-packages/django/core/handlers/base.py", line 165, in handle_uncaught_exception
    callback, param_dict = resolver.resolve500()

  File "/usr/lib/python2.4/site-packages/django/core/urlresolvers.py", line 266, in resolve500
    return self._resolve_special('500')

  File "/usr/lib/python2.4/site-packages/django/core/urlresolvers.py", line 255, in _resolve_special
    callback = getattr(self.urlconf_module, 'handler%s' % view_type)

  File "/usr/lib/python2.4/site-packages/django/core/urlresolvers.py", line 240, in _get_urlconf_module
    self._urlconf_module = import_module(self.urlconf_name)

  File "/usr/lib/python2.4/site-packages/django/utils/importlib.py", line 35, in import_module
    __import__(name)

  File "/projects/hellopoetry/trunk/hellopoetry/urls.py", line 13, in ?
    (r'^written/$', do_a_write),

NameError: name 'do_a_write' is not defined