diff --git a/examples/flaskrestful_example.py b/examples/flaskrestful_example.py
index 8e83d804..f904d93e 100644
--- a/examples/flaskrestful_example.py
+++ b/examples/flaskrestful_example.py
@@ -46,7 +46,6 @@ def post(self, x, y):
 
 
 class DateAddResource(Resource):
-
     dateadd_args = {
         "value": fields.Date(required=False),
         "addend": fields.Int(required=True, validate=validate.Range(min=1)),
diff --git a/tests/test_core.py b/tests/test_core.py
index c3e8d1f8..11c2373a 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -510,7 +510,6 @@ def load_data(req, schema):
 
 
 def test_full_input_validation(parser, web_request):
-
     web_request.json = {"foo": 41, "bar": 42}
 
     args = {"foo": fields.Int(), "bar": fields.Int()}
@@ -775,7 +774,6 @@ def test_multiple_arg_required_with_int_conversion(web_request, parser):
 
 
 def test_parse_with_callable(web_request, parser):
-
     web_request.json = {"foo": 42}
 
     class MySchema(Schema):
@@ -827,7 +825,6 @@ def test_passing_schema_to_parse(self, parser, web_request):
         assert result == {"email": "foo@bar.com", "password": "bar"}
 
     def test_use_args_can_be_passed_a_schema(self, web_request, parser):
-
         web_request.json = {"email": "foo@bar.com", "password": "bar"}
 
         @parser.use_args(self.UserSchema(), web_request)
@@ -861,7 +858,6 @@ def viewfunc(args):
         assert viewfunc() == {"email": "foo@bar.com", "password": "bar"}
 
     def test_use_kwargs_can_be_passed_a_schema(self, web_request, parser):
-
         web_request.json = {"email": "foo@bar.com", "password": "bar"}
 
         @parser.use_kwargs(self.UserSchema(), web_request)