Update dash_plotly_QC_scRNA.py

dash_plotly_QC_scRNA.py

@@ -48,7 +48,7 @@ storage_options={'account_name': AZURE_STORAGE_ACCOUNT, 'account_key': AZURE_STO
 #azfs = AzureBlobFileSystem(**storage_options )
 
 #df = pl.read_parquet(filepath,storage_options=storage_options)
-df= None
+df = pl.DataFrame()
 #abfs = AzureBlobFileSystem(account_name=accountname,account_key=accountkey)
 #df = df.rename({"__index_level_0__": "Unnamed: 0"})
 
@@ -63,8 +63,8 @@ tab0_content = html.Div([
 ])
 
 @app.callback(
-    Input(component_id='dpdn1', component_property='value'),
-    Output('output-div', 'children'))
+    Input(component_id='dpdn1', component_property='value')
+)
 def update_dataset(dataset_chosen):
     global df
     filepath = f"az://data10xflex/{dataset_chosen}.parquet"