diff --git a/show/interfaces/__init__.py b/show/interfaces/__init__.py
index 7aafbf5f47..4d88a82d95 100644
--- a/show/interfaces/__init__.py
+++ b/show/interfaces/__init__.py
@@ -360,16 +360,16 @@ def expected(db, interfacename):
 @click.option('--display', '-d', 'display', default=None, show_default=False,
               type=str, help='all|frontend')
 @click.pass_context
+
 def mpls(ctx, interfacename, namespace, display):
     """Show Interface MPLS status"""
-
     # Edge case: Force show frontend interfaces on single asic
     if not (multi_asic.is_multi_asic()):
-       if (display == 'frontend' or display == 'all' or display is None):
-           display = None
-       else:
-           print("Error: Invalid display option command for single asic")
-           return
+        if (display == 'frontend' or display == 'all' or display is None):
+            display = None
+        else:
+            print("Error: Invalid display option command for single asic")
+            return
 
     display = "all" if interfacename else display
     masic = multi_asic_util.MultiAsic(display_option=display, namespace_option=namespace)
@@ -945,7 +945,10 @@ def dhcp_mitigation_rate(db, interfacename):
     def tablelize(keys):
         table = []
         for key in natsorted(keys):
-            r = [clicommon.get_interface_name_for_display(db, key), clicommon.get_interface_dhcp_mitigation_rate(db.cfgdb, key)]
+            r = [
+                clicommon.get_interface_name_for_display(db, key),
+                clicommon.get_interface_dhcp_mitigation_rate(db.cfgdb, key)
+                ]
             table.append(r)
         return table
 
diff --git a/tests/dhcp_rate_test.py b/tests/dhcp_rate_test.py
index 5b14ff95bb..5da2e3695a 100644
--- a/tests/dhcp_rate_test.py
+++ b/tests/dhcp_rate_test.py
@@ -266,7 +266,10 @@ def test_config_dhcp_rate_add_on_invalid_interface(self):
         assert "Error: etp33 does not exist" in result.output
 
     @patch("validated_config_db_connector.device_info.is_yang_config_validation_enabled", mock.Mock(return_value=True))
-    @patch("config.validated_config_db_connector.ValidatedConfigDBConnector.validated_mod_entry", mock.Mock(side_effect=ValueError))
+    @patch(
+        "config.validated_config_db_connector.ValidatedConfigDBConnector.validated_mod_entry",
+        mock.Mock(side_effect=ValueError)
+        )
     def test_config_dhcp_rate_add_del_with_value_error(self):
         db = Db()
         runner = CliRunner()
diff --git a/tests/interfaces_test.py b/tests/interfaces_test.py
old mode 100644
new mode 100755
index ec82d9d544..af33fe12be
--- a/tests/interfaces_test.py
+++ b/tests/interfaces_test.py
@@ -263,6 +263,14 @@
 PortChannel1001  trunk               4000
 """
 
+show_dhcp_rate_limit_in_alias_mode_output = """\
+Interface      DHCP Mitigation Rate
+-----------  ----------------------
+etp1                            300
+etp2
+"""
+
+
 class TestInterfaces(object):
     @classmethod
     def setup_class(cls):
@@ -445,17 +453,14 @@ def test_parse_interface_in_filter(self):
         intf_list = parse_interface_in_filter(intf_filter)
         assert len(intf_list) == 1
         assert intf_list[0] == "Ethernet0"
-
         intf_filter = "Ethernet1-3"
         intf_list = parse_interface_in_filter(intf_filter)
         assert len(intf_list) == 3
         assert intf_list == ["Ethernet1", "Ethernet2", "Ethernet3"]
-
         intf_filter = "Ethernet-BP10"
         intf_list = parse_interface_in_filter(intf_filter)
         assert len(intf_list) == 1
         assert intf_list[0] == "Ethernet-BP10"
-
         intf_filter = "Ethernet-BP10-12"
         intf_list = parse_interface_in_filter(intf_filter)
         assert len(intf_list) == 3
@@ -464,17 +469,14 @@ def test_parse_interface_in_filter(self):
     def test_show_interfaces_switchport_status(self):
         runner = CliRunner()
         db = Db()
-
         result = runner.invoke(
             config.config.commands["switchport"].commands["mode"], ["routed", "PortChannel0001"], obj=db)
         print(result.exit_code)
         print(result.output)
         assert result.exit_code == 0
-
         result = runner.invoke(show.cli.commands["interfaces"].commands["switchport"].commands["status"])
         print(result.exit_code)
         print(result.output)
-
         assert result.exit_code == 0
         assert result.output == show_interfaces_switchport_status_output
 
@@ -483,7 +485,6 @@ def test_show_interfaces_switchport_config(self):
         result = runner.invoke(show.cli.commands["interfaces"].commands["switchport"].commands["config"])
         print(result.exit_code)
         print(result.output)
-
         assert result.exit_code == 0
         assert result.output == show_interfaces_switchport_config_output
 
@@ -494,7 +495,6 @@ def test_show_interfaces_switchport_config_in_alias_mode(self):
         os.environ['SONIC_CLI_IFACE_MODE'] = "default"
         print(result.exit_code)
         print(result.output)
-
         assert result.exit_code == 0
         assert result.output == show_interfaces_switchport_config_in_alias_mode_output