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https://issues.apache.org/jira/browse/AIRFLOW-4833?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16916714#comment-16916714
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Galak commented on AIRFLOW-4833:
--------------------------------
the dag additional attribute will actually be called
{{jinja_environment_kwargs}}.
It gives something like:
{code:python}
DAG(dag_id='my-dag',
jinja_environment_kwargs={
'keep_trailing_newline': True,
# some other jinja2 Environment options here
}){code}
see this [thread on
slack|https://apache-airflow.slack.com/archives/CCPRP7943/p1566908457361800]
for more information.
> Jinja templating removes newlines
> ---------------------------------
>
> Key: AIRFLOW-4833
> URL: https://issues.apache.org/jira/browse/AIRFLOW-4833
> Project: Apache Airflow
> Issue Type: Bug
> Components: operators
> Affects Versions: 1.10.2
> Reporter: Francesco Macagno
> Assignee: Galak
> Priority: Minor
>
> When using an operator that has Jinja templating enabled for a field, if the
> field value ends with a newline then the newline is removed, regardless of
> whether there was a template in the string.
>
> This came up when attempting to send data to Prometheus pushgateway using the
> SimpleHttpOperator. Pushgateway requires a newline at the end of every entry,
> so the removal of the newline at the end of the data parameter causes the
> request to fail in a way that is difficult to debug.
>
> This can be gotten around by including a space after the newline character,
> though this is not a great solution. The space is ignored by pushgateway.
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