def form_invalid(self, form):
        return self.render_to_response(self.get_context_data(form=form))
Return the default settings as an iterator of (name, value) tuples
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/views/generic/edit.py/FormMixin.form_invalid--crossover with--dataset/ETHPy150Open scrapy/scrapy/scrapy/settings/__init__.py/iter_default_settings