I forgot about show the graphic for what we define in Python API. When we
declare `pd.run()`,
all model will post to Apache DolphinScheduler server, it would create a dag
graphic as below
--> task_child_one
/ \
task_parent --> --> task_union
\ /
--> task_child_two
You could also find this graphic in tutorial.py[1] too
[1]:
https://github.com/apache/dolphinscheduler/pull/6269/files#diff-5561fec6b57cc611bee2b0d8f030965d76bdd202801d9f8a1e2e74c21769bc41
Best Wish
— Jiajie
> ```python
> from pydolphinscheduler.core.process_definition import ProcessDefinition
> from pydolphinscheduler.tasks.shell import Shell
>
> with ProcessDefinition(name="tutorial") as pd:
> task_parent = Shell(name="task_parent", command="echo hello
> pydolphinscheduler")
> task_child_one = Shell(name="task_child_one", command="echo 'child one'")
> task_child_two = Shell(name="task_child_two", command="echo 'child two'")
> task_union = Shell(name="task_union", command="echo union")
>
> task_group = [task_child_one, task_child_two]
> task_parent.set_downstream(task_group)
>
> task_union << task_group
>
> pd.run()
> ```
