diff --git a/src/database/sparql_implementation.py b/src/database/sparql_implementation.py
index 5ece152..b1f89d7 100644
--- a/src/database/sparql_implementation.py
+++ b/src/database/sparql_implementation.py
@@ -67,10 +67,12 @@ def default_query(
                     if inverse:
                         query.where.append(f"OPTIONAL {{ ?{field} {filter} {subject} }}")
                         continue
-                
+
                 if field == "confidence":
                     filter = self.value_to_sparql(self.get_slot_uri(field))
-                    query.add_filter(f'STR(?{field}) >= "{values["min"]}" && STR(?{field}) <= "{values["max"]}"')
+                    query.add_filter(
+                        f'STR(?{field}) >= "{values["min"]}" && STR(?{field}) <= "{values["max"]}"'
+                    )
                     continue
 
                 if values is not None:
@@ -190,10 +192,10 @@ def get_sssom_mappings_by_curie(self, search_filter: SearchEntity) -> Iterable[M
     def get_ui_mappings_by_curie(self, search_filter: SearchEntity) -> Iterable[dict]:
         filters = search_filter.dict()
         
-        if filters["mapping_justification"] != None:
+        if filters["mapping_justification"] is not None:
             justifs = filters["mapping_justification"]
             filters["mapping_justification"] = [expand_uri(justif) for justif in justifs]
-            
+
         curies = filters.pop("curies")
         filters["subject_id"] = [expand_uri(curie) for curie in curies]
         bindings = self.get_mappings_by_field(filters)
@@ -263,7 +265,11 @@ def get_sssom_mapping_sets_query(
                     bindings_list = self.transform_result_list(self._query(default_query_list))
                     r[f"{field}"] = bindings_list
 
-            r["mappings"] = {"href": request.url_for(name="mappings_by_mapping_set", id=r["uuid"])} # type: ignore
+            r["mappings"] = {
+                "href": request.url_for(name="mappings_by_mapping_set",  # type: ignore
+                                        id=r["uuid"],
+                )
+            }
             r.pop("_x")
             yield r