[GitHub] [airflow] uranusjr commented on a change in pull request #17749: Example xcom update

[GitBox]

uranusjr commented on a change in pull request #17749:
URL: https://github.com/apache/airflow/pull/17749#discussion_r693308881



##########
File path: airflow/example_dags/example_xcom.py
##########
@@ -81,3 +90,28 @@ def puller(**kwargs):
     )
 
     pull << [push1, push2]
+
+    bash_push = BashOperator(
+        task_id='bash_push',
+        bash_command='echo "bash_push demo"  && '
+        'echo "Manually set xcom value '
+        '{{ti.xcom_push(key="manually_pushed_value", 
value="manually_pushed_value") }}" && '
+        'echo "value_by_return"',
+    )
+    bash_pull = BashOperator(
+        task_id='bash_pull',
+        bash_command='echo "bash pull demo" && '
+        'echo "The xcom pushed manually is '
+        '"{{ ti.xcom_pull(task_ids="bash_push",key="manually_pushed_value") 
}}" && '
+        'echo "The returned_value xcom is '
+        '"{{ ti.xcom_pull(task_ids="bash_push",key="return_value") }}" && '
+        'echo "finished"',
+        do_xcom_push=False,
+    )

Review comment:
       ```suggestion
       bash_pull = BashOperator(
           task_id='bash_pull',
           bash_command='echo "bash pull demo" && '
           'echo "The xcom pushed manually is '
           '"{{ ti.xcom_pull(task_ids="bash_push", key="manually_pushed_value") 
}}" && '
           'echo "The returned_value xcom is '
           '"{{ ti.xcom_pull(task_ids="bash_push", key="return_value") }}" && '
           'echo "finished"',
           do_xcom_push=False,
       )
   ```




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