address spacing issues

moto/redshift/exceptions.py

@@ -101,12 +101,14 @@ class SnapshotCopyDisabledFaultError(RedshiftClientError):
             'SnapshotCopyDisabledFault',
             "Cannot modify retention period because snapshot copy is disabled on Cluster {0}.".format(cluster_identifier))
 
+
 class SnapshotCopyAlreadyDisabledFaultError(RedshiftClientError):
     def __init__(self, cluster_identifier):
         super(SnapshotCopyAlreadyDisabledFaultError, self).__init__(
             'SnapshotCopyAlreadyDisabledFault',
             "Snapshot Copy is already disabled on Cluster {0}.".format(cluster_identifier))
 
+
 class SnapshotCopyAlreadyEnabledFaultError(RedshiftClientError):
     def __init__(self, cluster_identifier):
         super(SnapshotCopyAlreadyEnabledFaultError, self).__init__(

moto/redshift/models.py

@@ -226,7 +226,6 @@ class Cluster(TaggableResourceMixin, BaseModel):
             "NodeType": self.node_type,
             "ClusterIdentifier": self.cluster_identifier,
             "AllowVersionUpgrade": self.allow_version_upgrade,
-
             "Endpoint": {
                 "Address": self.endpoint,
                 "Port": self.port

tests/test_redshift/test_redshift.py

@@ -1090,6 +1090,7 @@ def test_disable_snapshot_copy():
     response = client.describe_clusters(ClusterIdentifier='test')
     response['Clusters'][0].shouldnt.contain('ClusterSnapshotCopyStatus')
 
+
 @mock_redshift
 def test_modify_snapshot_copy_retention_period():
     client = boto3.client('redshift', region_name='us-east-1')