paantya commented on issue #16430:
URL: https://github.com/apache/airflow/issues/16430#issuecomment-861556833


   so far it has come to mind that it will be necessary to specify each 
parameter in the launch parameters, like params['clustering']['high'] :
   
   ```
   params = {
     "clustering": {
       "high": 200, 
       "tests": 10, 
       "algo": "kmeans", 
       "step": 10, 
       "low": 15
     }, 
     "project_name": "QL/SGOB/", 
     "experiment": {
       "name": "medium_size_clustering_estimation", 
       "dataset": "data_test_5e5"
     }, 
     "logger": [
       {
         "name": "Console"
       }, 
       {
         "name": "File"
       }
     ], 
     "estimation": {
       "metrics": [
         "calinski_harabasz", 
         "minus_davies_bouldin"
       ], 
       "file": true
     }, 
     "data_preparation": {
       "preprocess": "normalize_histogram_mean_std", 
       "key": "histogram"
     }
   }
   ```
   
   ```
   with DAG(
       'tutorial',
       default_args=default_args,
       schedule_interval=timedelta(days=1),
       start_date=days_ago(2),
       params=params,
   ) as dag:
   ```
   & then use it in a task, like this
   
       t2 = BashOperator(
           task_id='run test',
           depends_on_past=False,
           bash_command="python3.7 test.py params.clustering.high={{ 
params['clustering']['high'] }}",
       )


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