Update app.py

app.py

@@ -34,7 +34,8 @@ def get_hrrr_values(date,variable,level):
 def multiple_dates(dates,variable,level):
     dates=dates.split(";")
     results=Parallel(n_jobs=6)(delayed(get_hrrr_values)(i,variable,level) for i in dates)
-    return results
+    ds_all=np.stack(results)
+    return ds_all
     
 
 with gr.Blocks(show_api=True) as demo: