[jira] [Created] (AIRFLOW-5898) alembic command crashes due to typing import path collision

["QP Hou (Jira)" <ji...@apache.org>]

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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