diff --git a/analysis/age/hist_groups.py b/analysis/age/hist_groups.py
index 65f113e..2e0f433 100644
--- a/analysis/age/hist_groups.py
+++ b/analysis/age/hist_groups.py
@@ -260,7 +260,9 @@ def cluster(df, year, n_clst, method, cluster_by, outdir, font_name, folder_name
             if method == "kmeans":
                 insert_data_to_mongo(metroId, histdata, l1histcoll)
             else:
-                l1statcoll = statcollection[folder_name + "_" + year + "_1level_" + method]
+                l1statcoll = statcollection[
+                    folder_name + "_" + year + "_1level_" + method
+                ]
                 l1statcoll.delete_many({"metroId": metroId})
                 insert_data_to_mongo(
                     metroId,
diff --git a/scrap/utils/spreadsheet.py b/scrap/utils/spreadsheet.py
index 999386c..30de975 100644
--- a/scrap/utils/spreadsheet.py
+++ b/scrap/utils/spreadsheet.py
@@ -204,4 +204,4 @@ def main() -> None:
 
 
 if __name__ == "__main__":
-    main()
\ No newline at end of file
+    main()