diff --git a/semantic-conventions/src/opentelemetry/semconv/model/semantic_convention.py b/semantic-conventions/src/opentelemetry/semconv/model/semantic_convention.py
index 94136f90..ad087846 100644
--- a/semantic-conventions/src/opentelemetry/semconv/model/semantic_convention.py
+++ b/semantic-conventions/src/opentelemetry/semconv/model/semantic_convention.py
@@ -132,7 +132,12 @@ def _get_attributes(self, templates: Optional[bool]):
                 if templates is None
                 or templates == AttributeType.is_template_type(attr.attr_type)
             ],
-            key=lambda attr: (attr.requirement_level.value if attr.requirement_level else RequirementLevel.OPT_IN.value, attr.fqn),
+            key=lambda attr: (
+                attr.requirement_level.value
+                if attr.requirement_level
+                else RequirementLevel.OPT_IN.value,
+                attr.fqn,
+            ),
         )
 
     def __init__(self, group):