add cert_expires_at

enrollments-events/app/events/allocate_slots.py

@@ -86,7 +86,7 @@ class Course:
 
 def _get_courses(ids: set) -> tuple[Course, ...]:
     pairs = tuple(KeyPair(idx, '0') for idx in ids)
-    result = course_layer.collection.get_items(
+    r = course_layer.collection.get_items(
         KeyChain(pairs),
         flatten_top=False,
     )
@@ -96,7 +96,7 @@ def _get_courses(ids: set) -> tuple[Course, ...]:
             name=obj['name'],
             access_period=obj['access_period'],
         )
-        for idx, obj in result.items()
+        for idx, obj in r.items()
     )
 
     return courses