What is the underscore function shown in readme ?

[ArnaudPel]

The nature of the _() function in the readme needs to be documented, or maybe renamed, eg. here:

email_subject = _('Order no. {{item.pk}} has been shipped.')

[BallisticPain]

@ArnaudPel That is likely from an import that deals with i18n. It is a common pattern I've seen. The gettext standard library is the likely candidate. But below is an example I use in my Django projects.

from django.utils.translation import gettext_lazy as _