Django patch to help with testing that content is correctly marked up for translation

django-translation-patch.py

# django/utils/translation/trans_real.py
# 
# Add the following to the end of the `do_translate` method (~line 316 in Django 1.11.27), just after the eol_message assignment.
# 
# This replaces characters within content marked up for translation with `#`. The idea is that, with this 
# patch applied, you can browse the site and look for any copy that has not been replaced with `#`. Any 
# copy you find will not yet have been marked up for translation.

import re
return re.sub(r'[^ ]', r'#', message)