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

["Jarek Potiuk (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AIRFLOW-5898?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jarek Potiuk resolved AIRFLOW-5898.
-----------------------------------
    Fix Version/s: 2.0.0
       Resolution: Fixed

> 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
>            Priority: Trivial
>             Fix For: 2.0.0
>
>
> 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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