added two functions to render ListView and DetailView pages

assignments/views.py

 from django.shortcuts import render
-from .models import Assignment
+from .models import Assignment, Course
 
 
-def assignments_view(request):
-    objects_set = {
-        "all_assignments": [obj for obj in Assignment.objects.all()]
+def ListView_view(request, *args, **kwargs):
+    list_context = {
+        "all_courses": [obj for obj in Course.objects.all()]
     }
-    return render(request, "assignments_template.html", objects_set)
+    return render(request, "assignments/ListView.html", list_context)
+
+
+def DetailView_view(request, pk):
+    detailed_context = {
+        "assignment": Assignment.objects.get(id=pk)
+    }
+    return render(request, "assignments/DetailView.html", detailed_context)