Lints.

moto/instance_metadata/__init__.py

@@ -1,4 +1,4 @@
 from __future__ import unicode_literals
 from .models import instance_metadata_backend
 
-instance_metadata_backends = {"global": instance_metadata_backend}
+instance_metadata_backends = {"global": instance_metadata_backend}

moto/instance_metadata/models.py

@@ -4,4 +4,5 @@ from moto.core.models import BaseBackend
 class InstanceMetadataBackend(BaseBackend):
     pass
 
+
 instance_metadata_backend = InstanceMetadataBackend()

moto/instance_metadata/responses.py

@@ -7,6 +7,7 @@ from moto.core.responses import BaseResponse
 
 
 class InstanceMetadataResponse(BaseResponse):
+
     def metadata_response(self, request, full_url, headers):
         """
         Mock response for localhost metadata
@@ -43,5 +44,6 @@ class InstanceMetadataResponse(BaseResponse):
         elif path == 'iam/security-credentials/default-role':
             result = json.dumps(credentials)
         else:
-            raise NotImplementedError("The {0} metadata path has not been implemented".format(path))
+            raise NotImplementedError(
+                "The {0} metadata path has not been implemented".format(path))
         return 200, headers, result