diff --git a/src/linkahead/common/models.py b/src/linkahead/common/models.py
index af40ce8cb0e0942f58ae7c226563a76d1769c0c2..031afe4e514908e81e5980d14244dec7390cf86c 100644
--- a/src/linkahead/common/models.py
+++ b/src/linkahead/common/models.py
@@ -3003,7 +3003,6 @@ class Container(list):
         return xml2str(self.to_xml())
 
     def __getitem__(self, key):
-        
         self_as_list_slice = super().__getitem__(key)
         if isinstance(self_as_list_slice, list):
             # Construct new Container from list slice
diff --git a/unittests/test_container.py b/unittests/test_container.py
index f2c57c84c81a05ab2c7a4ee21a5877abda3397ad..c3a60140d43383c81f03c38c9dd5cc7779bc77ba 100644
--- a/unittests/test_container.py
+++ b/unittests/test_container.py
@@ -198,4 +198,4 @@ def test_container_slicing():
         cont["stringkey"]
 
     with pytest.raises(TypeError):
-        cont[[0,2,3]]
+        cont[[0, 2, 3]]