Debug doesn't catch exception instead complains views does not exist

[yeukhon]

Suppose we have this forms.py:

class SubmitButtonField(forms.Field):
     # here we write a custom field....

class Editor(forms.Form):
    script_name = forms.CharField(max_length=60, min_length=1)
    view_level = forms.ChoiceField(widget=forms.widgets.RadioSelect, choices=VIEW_LEVEL)
    text_box = forms.CharField(widget=forms.widgets.Textarea, required=False)
    save_button = forms.SubmitButtonField(required=False)

    # notice save_button above....

Notice that save_button has an error. I accidentally added forms. in the beginning. This is invalid, and Python will raise exception.

However, when we try to visit the page, it complains about myapp.views.view_name does not exist.
I fired up django shell, and when I import myapp.views I got this error:

AttributeError: 'module' object has no attribute 'SubmitButtonField'

Django debug page does not really catch this kind of exception. Is this a bug or an enactment-to-be-made?

[Aymeric Augustin]

Replaced the link to a paste site with the actual content, in case the paste site disappears.