diff --git a/hyperglass/configuration/models/routers.py b/hyperglass/configuration/models/routers.py
index eb5f227..793d93f 100644
--- a/hyperglass/configuration/models/routers.py
+++ b/hyperglass/configuration/models/routers.py
@@ -16,7 +16,8 @@ from hyperglass.configuration.models.commands import Command
 from hyperglass.configuration.models.credentials import Credential
 from hyperglass.configuration.models.networks import Network
 from hyperglass.configuration.models.proxies import Proxy
-from hyperglass.configuration.models.vrfs import DefaultVrf, Vrf
+from hyperglass.configuration.models.vrfs import DefaultVrf
+from hyperglass.configuration.models.vrfs import Vrf
 from hyperglass.constants import Supported
 from hyperglass.exceptions import ConfigError
 from hyperglass.exceptions import UnsupportedDevice
@@ -115,6 +116,7 @@ class Router(HyperglassModel):
                     f'Field "display_name" for VRF "{vrf["name"]}" was not set. '
                     f'Generated "display_name" {vrf["display_name"]}'
                 )
+
                 # Validate the non-default VRF against the standard
                 # Vrf() class.
                 vrf = Vrf(**vrf)
diff --git a/hyperglass/constants.py b/hyperglass/constants.py
index 6997044..84e0f58 100644
--- a/hyperglass/constants.py
+++ b/hyperglass/constants.py
@@ -1,4 +1,5 @@
 """Constant definitions used throughout the application."""
+# Standard Library Imports
 import sys
 
 protocol_map = {80: "http", 8080: "http", 443: "https", 8443: "https"}
diff --git a/hyperglass/exceptions.py b/hyperglass/exceptions.py
index 5843afc..aa9fd6b 100644
--- a/hyperglass/exceptions.py
+++ b/hyperglass/exceptions.py
@@ -1,6 +1,9 @@
 """Custom exceptions for hyperglass."""
 
+# Standard Library Imports
 import json as _json
+
+# Project Imports
 from hyperglass.util import log