added docstrings

lms/djangoapps/courseware/module_render.py

@@ -384,6 +384,7 @@ def xqueue_callback(request, course_id, userid, id, dispatch):
     if instance_module.grade != oldgrade or instance_module.state != old_instance_state:
         instance_module.save()
 
+        #Bin score into range and increment stats
         score_bucket=get_score_bucket(instance_module.grade, instance_module.max_grade)
         org, course_num, run=course_id.split("/")        
         statsd.increment("lms.courseware.question_answered",
@@ -476,6 +477,7 @@ def modx_dispatch(request, dispatch, location, course_id):
             instance_module.max_grade != old_instance_max_grade):
             instance_module.save()
 
+            #Bin score into range and increment stats
             score_bucket=get_score_bucket(instance_module.grade, instance_module.max_grade)
             org, course_num, run=course_id.split("/")        
             statsd.increment("lms.courseware.question_answered",
@@ -530,9 +532,12 @@ def preview_chemcalc(request):
 
     return HttpResponse(json.dumps(result))
 
-#Function to split arbitrary score ranges into 3 buckets.
-#Used with statsd tracking.
+
 def get_score_bucket(grade,max_grade):
+    """
+    Function to split arbitrary score ranges into 3 buckets.
+    Used with statsd tracking.
+    """
     score_bucket="incorrect"
     if(grade>0 and grade<max_grade):
         score_bucket="partial"