more Long improvements

generic/models.py

@@ -74,6 +74,12 @@ class QuestionBase(models.Model):
     class Meta:
         abstract = True
 
+    def get_unanswered_mark_and_text(self) -> tuple(int, str):
+        """
+        Override in models if needed
+        """
+        return (0, "Not answered")
+
 
 class ExamBase(models.Model):
     name = models.CharField(max_length=200, help_text="Name of the exam")