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.. _export_dynamic_environment_variables:

Export dynamic environment variables available for operators to use

The key value pairs returned in get_airflow_context_vars defined in airflow_local_settings.py are injected to default Airflow context environment variables, which are available as environment variables when running tasks. Note, both key and value are must be string.

dag_id, task_id, execution_date, dag_run_id, dag_owner, dag_email are reserved keys.

For example, in your airflow_local_settings.py file:

.. code-block:: python

def get_airflow_context_vars(context) -> dict[str, str]: """ :param context: The context for the task_instance of interest. """ # more env vars return {"airflow_cluster": "main"}

See :ref:Configuring local settings <set-config:configuring-local-settings> for details on how to configure local settings.