kazanzhy opened a new pull request #20071:
URL: https://github.com/apache/airflow/pull/20071


   closes: #19922
   related: #20044
   
   Add return condition for `ShortCircuinOperator`.
   If `python_callable` returns the object that casts as `True` then that 
object will be available as XCom with key `return_value`.
   
   Possible use case:
   If we need to run pipeline only when some files exist in a certain 
directory. Then callable in `ShortCircuitOperator` could return all files in 
the directory. If there are no files then downstream tasks will be skipped (`[] 
== False`) otherwise downstream tasks just will take the list of files and 
process it.
   
   
   
   


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