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Allow setting TaskGroup tooltip via function docstring #26028

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merged 5 commits into from
Sep 6, 2022

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josh-fell
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DAG authors may find it useful to utilize the existing function's docstring as a TaskGroup tooltip for other users looking the the DAG itself; especially for those who wouldn't necessarily have access to the underlying code.

This PR will set the TaskGroup's tooltip of a @task_group-decorated function with its docstring should it exist. However, if a tooltip value is explicitly set, the docstring will not be used.


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@uranusjr
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Should a note be added to the documentation on this?

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@josh-fell
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Should a note be added to the documentation on this?

Definitely would be nice. Sadly #20762 is still open so we don't have docs for this decorator explicitly. However, the TaskGroup section in the Concepts doc might be a good first start. (And to transition to the decorator style in examples too.) Is that acceptable for now?

As a natural extension of authoring practices by adding docstrings to functions, DAG authors may find it useful to utilize the existing function's docstring as a TaskGroup tooltip for other users looking the the DAG itself; especially for those who wouldn't necessarily have access to the underlying code.

This PR will set the TaskGroup's tooltip of a `@task_group`-decorated function with its docstring should it exist. However, if a tooltip value is explicitly set, the docstring will _not_ be used.
@uranusjr uranusjr merged commit da3dbff into apache:main Sep 6, 2022
@josh-fell josh-fell deleted the task-group-deco-tooltip branch September 6, 2022 20:46
@ephraimbuddy ephraimbuddy added the type:bug-fix Changelog: Bug Fixes label Sep 13, 2022
@ephraimbuddy ephraimbuddy added this to the Airflow 2.4.0 milestone Sep 14, 2022
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