This app extracts the runserver_plus management command from
django-extensions and makes it available as a replacement for Django's
default runserver management command.
Install from PyPI:
pip install django-werkzeug-debugger-runserver
Edit your settings.py and include werkzeug_debugger_runserver in your
INSTALLED_APPS before django.contrib.staticfiles:
INSTALLED_APPS = (
    # ...
    'werkzeug_debugger_runserver',
    'django.contrib.staticfiles',
    # ...
)
Start the development server using python manage.py runserver as usual. If
you run into an error the debugger-enabled error view will be shown in the
browser. If you want to force the debugger view to appear you can do it using
something like raise Exception in your code.