id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
22805	urlresolvers.get_callable() need to present the inner exception if any	fangsboyfriend@…	nobody	"When I start a django project with command 'manage.py runserver'

I got the following exception; I feel so puzzled about it. In fact, the view really exist. Why it say no? 

{{{
Traceback (most recent call last):
  File ""C:\Python27\lib\site-packages\django\core\handlers\base.py"", line 101, i
n get_response
    request.path_info)
  File ""C:\Python27\lib\site-packages\django\core\urlresolvers.py"", line 303, in
 resolve
    sub_match = pattern.resolve(new_path)
  File ""C:\Python27\lib\site-packages\django\core\urlresolvers.py"", line 212, in
 resolve
    return ResolverMatch(self.callback, args, kwargs, self.name)
  File ""C:\Python27\lib\site-packages\django\core\urlresolvers.py"", line 219, in
 callback
    self._callback = get_callable(self._callback_str)
  File ""C:\Python27\lib\site-packages\django\utils\functional.py"", line 27, in w
rapper
    result = func(*args)
  File ""C:\Python27\lib\site-packages\django\core\urlresolvers.py"", line 104, in
 get_callable
    (lookup_view, mod_name))
ViewDoesNotExist: Could not import desktop.desktop_views.portal. View does not exist in module desktop.desktop_views.
}}}

After reading the source code [line 101, urlresolvers.py], I found that the root reason is the 'AttributeError'.
{{{
except AttributeError:
            if not can_fail:
                raise ViewDoesNotExist(
                    ""Could not import %s. View does not exist in module %s."" %
                    (lookup_view, mod_name))
}}}

So I suggest to add the details of **AttributeError** within the final **ViewDoesNotExist** exception. It would make the diagnosis more easier."	Cleanup/optimization	closed	Core (Other)	1.6	Normal	wontfix			Unreviewed	0	0	0	0	0	0