Update batch_test.py

batch_test.py

@@ -19,18 +19,14 @@ def fail_alert(context):
         "sections": [
             {
                 "facts":[
-                    {"name":"■ Execution Time", "value": "{exec_date}"},
-                    {"name":"■ Task", "value": "{task}"},
-                    {"name":"■ DAG", "value": "{dag}"},
+                    {"name":"■ Execution Time", "value": "%s"},
+                    {"name":"■ Task", "value": "%s"},
+                    {"name":"■ DAG", "value": "%s"},
                 ]
             }
         ]
     }
-    """.format(
-        exec_date=context.get('execution_date'),
-        task=context.get('task_instance').task_id,
-        dag=context.get('task_instance').dag_id,
-    )
+    """ % (context.get('execution_date'), context.get('task_instance').task_id, context.get('task_instance').dag_id)
 
     alert = BashOperator(
         task_id='fail_alert',