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https://issues.apache.org/jira/browse/AIRFLOW-6508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17010664#comment-17010664
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ASF GitHub Bot commented on AIRFLOW-6508:
-----------------------------------------
potiuk commented on pull request #7100: [AIRFLOW-6508] Update the version of
cattrs from 0.9 to 1.0
URL: https://github.com/apache/airflow/pull/7100
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> Update the version of cattrs from 0.9 to 1.0
> --------------------------------------------
>
> Key: AIRFLOW-6508
> URL: https://issues.apache.org/jira/browse/AIRFLOW-6508
> Project: Apache Airflow
> Issue Type: Improvement
> Components: build
> Affects Versions: 1.10.8
> Reporter: Kousuke Saruta
> Assignee: Kousuke Saruta
> Priority: Major
>
> cattrs 0.9 with Python 3.8 causes following error.
> {code:java}
> $ airflow
> Traceback (most recent call last):
> File "/Users/sarutak/airflow-env/bin/airflow", line 27, in <module>
> from airflow.bin.cli import CLIFactory
> File
> "/Users/sarutak/airflow-env/lib/python3.8/site-packages/airflow/__init__.py",
> line 40, in <module>
> from airflow.models.dag import DAG
> File
> "/Users/sarutak/airflow-env/lib/python3.8/site-packages/airflow/models/__init__.py",
> line 21, in <module>
> from airflow.models.baseoperator import BaseOperator, BaseOperatorLink #
> noqa: F401
> File
> "/Users/sarutak/airflow-env/lib/python3.8/site-packages/airflow/models/baseoperator.py",
> line 41, in <module>
> from airflow.lineage import apply_lineage, prepare_lineage
> File
> "/Users/sarutak/airflow-env/lib/python3.8/site-packages/airflow/lineage/__init__.py",
> line 28, in <module>
> from cattr import structure, unstructure
> File
> "/Users/sarutak/airflow-env/lib/python3.8/site-packages/cattr/__init__.py",
> line 2, in <module>
> from .converters import Converter, UnstructureStrategy
> File
> "/Users/sarutak/airflow-env/lib/python3.8/site-packages/cattr/converters.py",
> line 3, in <module>
> from ._compat import (
> File
> "/Users/sarutak/airflow-env/lib/python3.8/site-packages/cattr/_compat.py",
> line 86, in <module>
> from typing import _Union
> ImportError: cannot import name '_Union' from 'typing'
> (/opt/python/3.8.0/lib/python3.8/typing.py) {code}
> This issue is resolved in cattrs 1.0.
> [https://github.com/Tinche/cattrs/pull/73]
> So let's update it.
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