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ephraimanierobi pushed a commit to branch v2-3-test
in repository https://gitbox.apache.org/repos/asf/airflow.git
commit dfb13eed9c807d4432c3fd8dacfa4285d57d9d0f
Author: Josh Fell <48934154+josh-f...@users.noreply.github.com>
AuthorDate: Sat Apr 30 13:37:31 2022 -0400
Add doc notes for keyword-only args for `expand()` and `partial()` (#23373)
(cherry picked from commit d3028e1e9036a3c67ec4477eee6cd203c12f7f5c)
---
docs/apache-airflow/concepts/dynamic-task-mapping.rst | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/docs/apache-airflow/concepts/dynamic-task-mapping.rst
b/docs/apache-airflow/concepts/dynamic-task-mapping.rst
index e93ddfd106..65017b49cd 100644
--- a/docs/apache-airflow/concepts/dynamic-task-mapping.rst
+++ b/docs/apache-airflow/concepts/dynamic-task-mapping.rst
@@ -62,6 +62,8 @@ The grid view also provides visibility into your mapped tasks
in the details pan
.. image:: /img/mapping-simple-grid.png
+.. note:: Only keyword arguments are allowed to be passed to ``expand()``.
+
.. note:: Values passed from the mapped task is a lazy proxy
In the above example, ``values`` received by ``sum_it`` is an aggregation
of all values returned by each mapped instance of ``add_one``. However, since
it is impossible to know how many instances of ``add_one`` we will have in
advance, ``values`` is not a normal list, but a "lazy sequence" that retrieves
each individual value only when asked. Therefore, if you run ``print(values)``
directly, you would get something like this::
@@ -175,6 +177,8 @@ It is possible to use ``partial`` and ``expand`` with
classic style operators as
bash_command=["echo 1", "echo 2"]
)
+.. note:: Only keyword arguments are allowed to be passed to ``partial()``.
+
Mapping over result of classic operators
----------------------------------------
