Нельзя было добавить урок на дату окончания школы

apps/school/views.py

@@ -38,12 +38,12 @@ class LiveLessonsView(ListView):
 
     def get_queryset(self):
         date_start = (now() - timedelta(days=7)).date()
-        date_start, date_end = SchoolPayment.get_date_range(date_start, days=17, is_camp=False)
+        date_start, date_end = SchoolPayment.get_date_range(date_start, days=16, is_camp=False)
         date_range = Q(
             date__range=[date_start, date_end]
         )
         exist_dates = LiveLesson.objects.filter(date_range, is_camp=False).values_list('date', flat=True)
-        for i in range((date_end - date_start).days):
+        for i in range((date_end - date_start).days + 1):
             d = date_start + timedelta(days=i)
             if d not in exist_dates:
                 try:
@@ -74,7 +74,7 @@ class DrawingCampLessonsView(ListView):
             date__range=[date_start, date_end]
         )
         exist_dates = LiveLesson.objects.filter(date_range, is_camp=True).values_list('date', flat=True)
-        for i in range((date_end - date_start).days):
+        for i in range((date_end - date_start).days + 1):
             d = date_start + timedelta(days=i)
             if d.isoweekday() in DrawingCampPayment.WEEKDAYS and d not in exist_dates:
                 try: