Fixed small bug.

2012-09-20 02:17:51 -04:00
parent b62e13aec8
commit 21f8fc3f9c
1 changed files with 1 additions and 1 deletions
--- a/lms/djangoapps/courseware/grades.py
+++ b/lms/djangoapps/courseware/grades.py
@@ -347,7 +347,7 @@ def get_score(course_id, user, problem_descriptor, module_creator, student_modul
        instance_module = get_instance_module(course_id, user, problem, student_module_cache)

    # If this problem is ungraded/ungradable, bail
-    if instance_module.max_grade is None:
+    if not instance_module or instance_module.max_grade is None:
        return (None, None)

    correct = instance_module.grade if instance_module.grade is not None else 0