QP Hou created AIRFLOW-5898:
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Summary: alembic command crashes due to typing import path
collision
Key: AIRFLOW-5898
URL: https://issues.apache.org/jira/browse/AIRFLOW-5898
Project: Apache Airflow
Issue Type: New Feature
Components: database
Affects Versions: 2.0.0
Reporter: QP Hou
Assignee: QP Hou
Running alemibc within airflow directory results in the following crash:
{code:java}
File
"/Users/qph/Envs/airflow/lib/python3.7/site-packages/typing_extensions.py",
line 17, in <module>
from typing import Generic, Callable, TypeVar, Tuple
ImportError: cannot import name 'Generic' from 'typing'
{code}
This is due to typing.py within airlfow directory collides with the builtin
typing module when a command runs inside airflow directory. Renaming it to
`custom_typing.py` fixes the issue.
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