typo

utilities_database/user_database_utils.py

@@ -190,16 +190,16 @@ def save_data_in_database(user_task_database, save_type, save_name, cefr_level,
     already_saved = user_task_database.select('*').execute().data
     already_saved_names = [task for task in already_saved 
                            if (task['creator_name']==creator_name 
-                               & task['save_name']==save_name 
-                               & task['cefr_level']==cefr_level)]
+                               and task['save_name']==save_name 
+                               and task['cefr_level']==cefr_level)]
     already_saved_tasks = [task for task in already_saved 
                            if (task['creator_name']==creator_name 
-                               & task['generated_result']==generated_result 
-                               & task['cefr_level']==cefr_level)]
+                               and task['generated_result']==generated_result 
+                               and task['cefr_level']==cefr_level)]
     already_saved_tests = [task for task in already_saved 
                            if (task['test_taker_name']==test_taker_name 
-                               & task['save_name']==save_name 
-                               & task['cefr_level']==cefr_level)]
+                               and task['save_name']==save_name 
+                               and task['cefr_level']==cefr_level)]
 
     if save_name == '' and save_type == 'download':
         save_name = generated_result['name']