add styling changes

stix2/environment.py

@@ -5,9 +5,10 @@ from .datastore import CompositeDataSource, DataStoreMixin
 from .equivalence.graph import graph_equivalence, graph_similarity
 from .equivalence.object import (  # noqa: F401
     WEIGHTS, check_property_present, custom_pattern_based, exact_match,
-    list_reference_check, partial_external_reference_based, partial_list_based,
+    list_reference_check, object_equivalence, object_similarity,
+    partial_external_reference_based, partial_list_based,
     partial_location_distance, partial_string_based, partial_timestamp_based,
-    reference_check, object_equivalence, object_similarity,
+    reference_check,
 )
 from .parsing import parse as _parse
 

stix2/equivalence/graph/__init__.py

@@ -2,8 +2,9 @@
 import logging
 
 from ..object import (
-    WEIGHTS, exact_match, list_reference_check, partial_string_based,
-    partial_timestamp_based, reference_check, object_similarity, object_pairs, bucket_per_type
+    WEIGHTS, bucket_per_type, exact_match, list_reference_check, object_pairs,
+    object_similarity, partial_string_based, partial_timestamp_based,
+    reference_check,
 )
 
 logger = logging.getLogger(__name__)

stix2/equivalence/object/__init__.py

@@ -401,7 +401,7 @@ def list_reference_check(refs1, refs2, ds1, ds2, **weights):
     pairs = object_pairs(
         bucket_per_type(refs1, "id-split"),
         bucket_per_type(refs2, "id-split"),
-        weights
+        weights,
     )
 
     for ref1, ref2 in pairs: