[GitHub] [airflow] uranusjr commented on issue #22152: render_template_as_native_obj=True in DAG constructor prevents failure e-mail from sending

[GitBox <gi...@apache.org>]

uranusjr commented on issue #22152:
URL: https://github.com/apache/airflow/issues/22152#issuecomment-1065396889


   Would you fancy a pull request please? The fix should be fairly straightforward, by changing the offending line in `render_template` to this:
   
   ```python
   return "".join((str(n) for n in nodes)
   ```
   
   Add a test can be added to ensure `render_template` works with non-str nodes.


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