I am a starter in python. Now I am working on a Django project.
I saw many lines of code containing  _('password'), _('last_login') etc.
Check the code below:
    username = models.CharField(
        _('username'),
        max_length=150,
        unique=True,
        help_text=_('Required. 150 characters or fewer. Letters, digits and @/./+/-/_ only.'),
        validators=[username_validator],
        error_messages={
            'unique': _("A user with that username already exists."),
        },
    )
What is the use of _('username')?