diff --git a/datagraph/format.py b/datagraph/format.py
index f767362..6fc5444 100644
--- a/datagraph/format.py
+++ b/datagraph/format.py
@@ -59,7 +59,10 @@ def assert_good_value_repr(r):
 
 
 def to_quickstatements_v1_item(
-    subject, lines, skip_impossible=True, skip_already_syncronized=True
+    subject,
+    lines,
+    skip_impossible=True,
+    skip_already_syncronized=True,
 ):
     # assert '@id' not in subject, 'TODO: Linked subjects'
     subject_id = fmt_value(subject, True) if '@id' in subject else 'LAST'
@@ -103,12 +106,14 @@ def to_quickstatements_v1_item(
 
             if skip_impossible and predicate_str.startswith('"'):
                 logging.warning(
-                    'Bad line: %s (Lines must not start with ")', predicate_str
+                    'Bad line: %s (Lines must not start with ")',
+                    predicate_str,
                 )
                 continue
             if '' in line and skip_impossible:
                 logging.warning(
-                    'Bad line: %s (Lines must not contain empty names)', line
+                    'Bad line: %s (Lines must not contain empty names)',
+                    line,
                 )
                 continue
             assert 'None' not in line, line
diff --git a/datagraph/schemeld.py b/datagraph/schemeld.py
index 0e80438..daa9474 100644
--- a/datagraph/schemeld.py
+++ b/datagraph/schemeld.py
@@ -21,7 +21,7 @@ class Concept:
         for k, v in pairs.items():
             keys = canonical_keys(k, context)
             self.pairs.append(
-                {'canonical_key': keys[0], 'keys': set(keys), 'values': v}
+                {'canonical_key': keys[0], 'keys': set(keys), 'values': v},
             )
         self.regenerate_by_keys()
 
@@ -36,7 +36,7 @@ class Concept:
                     'canonical_key': p['canonical_key'],
                     'keys': set(p['keys']),
                     'values': p['values'],
-                }
+                },
             )
         new.regenerate_by_keys()
         return new
diff --git a/datagraph/wikidata_ext.py b/datagraph/wikidata_ext.py
index ec3451b..e79337f 100644
--- a/datagraph/wikidata_ext.py
+++ b/datagraph/wikidata_ext.py
@@ -94,7 +94,8 @@ def get_triples_internal(subject, predicate, object):
         params['page'] = current_page
         url = (
             requests.Request(
-                url='https://query.wikidata.org/bigdata/ldf', params=params
+                url='https://query.wikidata.org/bigdata/ldf',
+                params=params,
             )
             .prepare()
             .url
@@ -142,6 +143,9 @@ def get_triples(client, subject=None, predicate=None, object=None):
 
 def get_backlinks(client, predicate, object):
     for subject, _, _ in get_triples(
-        client, subject=None, predicate=predicate, object=object
+        client,
+        subject=None,
+        predicate=predicate,
+        object=object,
     ):
         yield subject