fix: csv read

edx_exams/apps/core/management/commands/bulk_add_course_staff.py

@@ -58,7 +58,7 @@ def handle(self, *args, **options):
         #         self.add_course_staff_from_csv(csv_file, batch_size, batch_delay)
 
         # if csv_path:
-        with open(csv_path) as csv_file:
+        with open(csv_path, 'r') as csv_file:
             self.add_course_staff_from_csv(csv_file, batch_size, batch_delay)
 
         logger.info('Bulk add course staff complete!')
@@ -67,7 +67,7 @@ def add_course_staff_from_csv(self, csv_file, batch_size, batch_delay):
         """
         Add the given set of course staff provided in csv
         """
-        reader = list(csv.DictReader(csv_file))
+        reader = csv.DictReader(csv_file)
         users_to_create = []
         users_existing = {u.username for u in User.objects.filter(username__in=[r.get('username') for r in reader])}
         for row in reader: