diff --git a/sample-management-custom/caosdb-server/scripting/bin/update_containers.py b/sample-management-custom/caosdb-server/scripting/bin/update_containers.py
index 44c6c73021a0b9ad400f703ac8fa95c0d087dea3..8cf819d2afad9aae2443b1db1fa31a7ff31cb689 100755
--- a/sample-management-custom/caosdb-server/scripting/bin/update_containers.py
+++ b/sample-management-custom/caosdb-server/scripting/bin/update_containers.py
@@ -37,7 +37,8 @@ from linkahead.cached import cached_query, cached_get_entity_by
 from bis_utils import (get_do_not_insert_type_names,
                        replace_entity_urls_by_ids, whitespace_cleanup_in_df)
 from sample_helpers.container_update_get_parent import get_container_by_identifier
-from sample_helpers.container_update_post_processing import (post_process_containers_before_sync, post_process_parent_containers_before_sync, post_process_inserts_and_updates)
+from sample_helpers.container_update_post_processing import (
+    post_process_containers_before_sync, post_process_parent_containers_before_sync, post_process_inserts_and_updates)
 from sample_helpers.utils import (CONSTANTS, get_column_header_name, get_entity_name)
 
 # suppress warning of diff function
@@ -58,8 +59,6 @@ def _value_in_row(key, row):
     return True
 
 
-
-
 def get_parser():
     par = helper.get_argument_parser()
     return par
@@ -104,7 +103,7 @@ def main():
             return 1
         child.add_parent(get_entity_name("container_rt"))
         child_containers.append(child)
-        
+
         if _value_in_row(parent_column_name, row):
             parent_identifier = row[parent_column_name]
             parent = get_container_by_identifier(parent_identifier)
@@ -192,7 +191,8 @@ def main():
                 child.add_property(id=custom_label_prop.id,
                                    name=custom_label_prop.name, value=row[get_column_header_name("custom_label_prop")])
             else:
-                child.get_property(custom_label_prop.id).value = row[get_column_header_name("custom_label_prop")]
+                child.get_property(
+                    custom_label_prop.id).value = row[get_column_header_name("custom_label_prop")]
 
         # Treat PI
         if _value_in_row(get_column_header_name("PI"), row):