| # |
| # 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. |
| |
| """ |
| This module provides helper code to make type annotation within Airflow |
| codebase easier. |
| """ |
| |
| try: |
| # Protocol and TypedDict are only added to typing module starting from |
| # python 3.8 we can safely remove this shim import after Airflow drops |
| # support for <3.8 |
| from typing import ( # type: ignore # noqa # pylint: disable=unused-import |
| Protocol, TypedDict, runtime_checkable, |
| ) |
| except ImportError: |
| from typing_extensions import Protocol, TypedDict, runtime_checkable # type: ignore # noqa |