Django 4.2.16

My code contains this line (beside lots more i18n texts):

filter_text = _('Filter')

I generate the “de” locale po file:

django-admin makemessages --locale de -i venv

The resulting po file is corrupt (see missing prefix “#:”):

#: .oamviewsarticlearticle_list.py:138
#: .oamviewsfillupfillup_list.py:109
#: .oamviewssettingsetting_list.py:49
 .oamviewsstockstock_list.py:75
#: .oamviewstom_articletom_article_list.py:53
#: .oamviewstransactiontransaction_list.py:90
msgid "Filter"
msgstr "Filter"

Running makemessages again of course leads into errors:

CommandError: errors happened while running msgmerge
c:workproapollooamlocaledeLC_MESSAGESdjango.po:1915:3: syntax error
c:workproapollooamlocaledeLC_MESSAGESdjango.po:1915: keyword "oam" unknown
c:workproapollooamlocaledeLC_MESSAGESdjango.po:1915: keyword "views" unknown
c:workproapollooamlocaledeLC_MESSAGESdjango.po:1915: keyword "stock" unknown
c:workproapollooamlocaledeLC_MESSAGESdjango.po:1915: keyword "stock_list" unknown
c:workproapollooamlocaledeLC_MESSAGESdjango.po:1915: keyword "py" unknown
msgmerge: found 6 fatal errors

When removing the i18n at this line the makemessages works well:

filter_text = 'Filter'

I’m totally lost. Any hints? Thanks!