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https://issues.apache.org/jira/browse/AIRFLOW-3651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16768077#comment-16768077
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Ash Berlin-Taylor commented on AIRFLOW-3651:
--------------------------------------------
Eeek.
Do you have any log customizations?
> email.py will break import airflow
> ----------------------------------
>
> Key: AIRFLOW-3651
> URL: https://issues.apache.org/jira/browse/AIRFLOW-3651
> Project: Apache Airflow
> Issue Type: Bug
> Affects Versions: 1.10.1
> Reporter: Seacen Zhao
> Assignee: Seacen Zhao
> Priority: Major
>
> Test scenario:
> # create email.py empty file in $AIRFLOW_HOME/dags/ folder
> # run python in $AIRFLOW_HOME/dags/ folder
> # execute *import airflow*
> # Encounter below error:
> >>> import airflow
> No handlers could be found for logger "airflow.logging_config"
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "/usr/lib/python2.7/site-packages/airflow/__init__.py", line 36, in
> <module>
> from airflow import settings
> File "/usr/lib/python2.7/site-packages/airflow/settings.py", line 259, in
> <module>
> configure_logging()
> File "/usr/lib/python2.7/site-packages/airflow/logging_config.py", line 72,
> in configure_logging
> raise e
> ValueError: Unable to configure handler 'task': Cannot resolve
> 'airflow.utils.log.file_task_handler.FileTaskHandler': cannot import name DAG
>
> Note that even after email.py is removed from the folder, the problem still
> exists. Can only disappear by deleting the dags folder completely and
> re-create it.
>
> This issue would impact testing of dag script.
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