airflow empty 源码
airflow empty 代码
文件路径：/airflow/operators/empty.py
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
from __future__ import annotations
from airflow.models.baseoperator import BaseOperator
from airflow.utils.context import Context
class EmptyOperator(BaseOperator):
"""
Operator that does literally nothing. It can be used to group tasks in a
DAG.
The task is evaluated by the scheduler but never processed by the executor.
"""
ui_color = '#e8f7e4'
inherits_from_empty_operator = True
def execute(self, context: Context):
pass
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