In airflow, how to get default value as ds inside jinja template

Question

In airflow dag, how to default to ds within jinja templating. For example,

script_args = { '--previousRunDt': '{{ prev_execution_date_success |default(ds)}}' }'

Here when prev_execution_date_success is none, I need ds as default value. But it is evaluating to None

Answer 1

In Jinja, the default() filter will be used if the original value is not defined/missing.

You could simply use an or statement here like:

script_args = { '--previousRunDt': '{{ prev_execution_date_success or ds }}' }'