[GitHub] XD-DENG opened a new pull request #4395: [AIRFLOW-3587] Remove unnecessary condition checks in dag_stats & task_stats

[GitBox <gi...@apache.org>]

XD-DENG opened a new pull request #4395: [AIRFLOW-3587] Remove unnecessary condition checks in dag_stats & task_stats
URL: https://github.com/apache/incubator-airflow/pull/4395
 
 
   ### Jira
   
     - https://issues.apache.org/jira/browse/AIRFLOW-3587
   
   
   ### Description
   
   - [x] Here are some details about my PR, including screenshots of any UI changes:
   
   These two condition checks will always pass no matter whether "all_dags" is in filter_dag_ids.
   
   **Reasoning:**
   
   - if `"all_dags" in filter_dag_ids == True`, `filter_dag_ids` will be updated into a list of all DAG IDs (no `"all_dags"` inside)
   - if `"all_dags" in filter_dag_ids == False`, `filter_dag_ids` will not be touched. It will still be a set of DAG IDs, or empty set.
   
   In either case,
   - there is no point to check whether `"all_dags"` is in `filter_dag_ids`, because for sure it will not.
   - then what's the point to check `dag_id in filter_dag_ids` in a `for loop` of `for dag_id in filter_dag_ids`?
   
   ### Code Quality
   
   - [x] Passes `flake8`

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