diff --git a/01-batch-serving(airflow)/dags/01-bash-operator.py b/01-batch-serving(airflow)/dags/01-bash-operator.py
index bff14238..90b60a6c 100644
--- a/01-batch-serving(airflow)/dags/01-bash-operator.py
+++ b/01-batch-serving(airflow)/dags/01-bash-operator.py
@@ -11,17 +11,14 @@
     # 'priority_weight': 10 # DAG의 우선 순위를 설정할 수 있음
     # 'end_date': datetime(2022, 4, 24) # DAG을 마지막으로 실행할 Date
     # 'execution_timeout': timedelta(seconds=300), # 실행 타임아웃 : 300초 넘게 실행되면 종료
-    # 'on_failure_callback': some_function # 만약에 Task들이 실패하면 실행할 함수
-    # 'on_success_callback': some_other_function
-    # 'on_retry_callback': another_function
 }
 
 # with 구문으로 DAG 정의
 with DAG(
-        dag_id='bash_dag',
-        default_args=default_args,
-        schedule_interval='@once',
-        tags=['my_dags']
+    dag_id='bash_dag',
+    default_args=default_args,
+    schedule_interval='@once',
+    tags=['my_dags']
 ) as dag:
     # BashOperator 사용
     task1 = BashOperator(
diff --git a/01-batch-serving(airflow)/dags/02-python-operator.py b/01-batch-serving(airflow)/dags/02-python-operator.py
index dc2ea9f2..3e4b060f 100644
--- a/01-batch-serving(airflow)/dags/02-python-operator.py
+++ b/01-batch-serving(airflow)/dags/02-python-operator.py
@@ -21,10 +21,10 @@ def print_current_date():
 
 # with 구문으로 DAG 정의
 with DAG(
-        dag_id='python_dag1',
-        default_args=default_args,
-        schedule_interval='30 0 * * *',  # UTC 시간 기준 0시 30분에 Daily로 실행하겠다! 한국 시간 기준 오전 9시 30분
-        tags=['my_dags']
+    dag_id='python_dag1',
+    default_args=default_args,
+    schedule_interval='30 0 * * *',  # UTC 시간 기준 0시 30분에 Daily로 실행하겠다! 한국 시간 기준 오전 9시 30분
+    tags=['my_dags']
 ) as dag:
     python_task = PythonOperator(
         task_id='print_current_date',
diff --git a/01-batch-serving(airflow)/dags/03-python-operator-with-context.py b/01-batch-serving(airflow)/dags/03-python-operator-with-context.py
index 462ecfc0..6ae9ddfc 100644
--- a/01-batch-serving(airflow)/dags/03-python-operator-with-context.py
+++ b/01-batch-serving(airflow)/dags/03-python-operator-with-context.py
@@ -43,10 +43,10 @@ def print_current_date_with_context_variable(*args, **kwargs):
 
 # with 구문으로 DAG 정의
 with DAG(
-        dag_id='python_dag_with_context',
-        default_args=default_args,
-        schedule_interval='30 0 * * *',
-        tags=['my_dags']
+    dag_id='python_dag_with_context',
+    default_args=default_args,
+    schedule_interval='30 0 * * *',
+    tags=['my_dags']
 ) as dag:
     PythonOperator(
         task_id='print_current_date_with_context_variable',
diff --git a/01-batch-serving(airflow)/dags/04-python-operator-with-jinja.py b/01-batch-serving(airflow)/dags/04-python-operator-with-jinja.py
index 61e3b608..5e9dfdc6 100644
--- a/01-batch-serving(airflow)/dags/04-python-operator-with-jinja.py
+++ b/01-batch-serving(airflow)/dags/04-python-operator-with-jinja.py
@@ -29,10 +29,10 @@ def print_current_date_with_jinja(date):
 
 # with 구문으로 DAG 정의
 with DAG(
-        dag_id='python_dag_with_jinja',
-        default_args=default_args,
-        schedule_interval='30 0 * * *',
-        tags=['my_dags']
+    dag_id='python_dag_with_jinja',
+    default_args=default_args,
+    schedule_interval='30 0 * * *',
+    tags=['my_dags']
 ) as dag:
     execution_date = "{{ ds }}"  # Template 정의