diff --git a/lib/bmc_network_utils.py b/lib/bmc_network_utils.py
index 82b10fd..9a4a1dc 100644
--- a/lib/bmc_network_utils.py
+++ b/lib/bmc_network_utils.py
@@ -5,19 +5,18 @@
 
 """
 
-import collections
-import ipaddress
-import json
-import re
-import socket
-import subprocess
-
-import bmc_ssh_utils as bsu
+import gen_print as gp
 import gen_cmd as gc
 import gen_misc as gm
-import gen_print as gp
 import var_funcs as vf
+import collections
+import re
+import ipaddress
+import subprocess
+import socket
 from robot.libraries.BuiltIn import BuiltIn
+import json
+import bmc_ssh_utils as bsu
 
 ip_regex = r"\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3}"
 
@@ -29,7 +28,7 @@
     """
 
     ip_list = list()
-    stdout = subprocess.check_output(["hostname", "--all-fqdns"], shell=True)
+    stdout = subprocess.check_output(['hostname', '--all-fqdns'], shell=True)
     host_fqdns = stdout.decode("utf-8").strip()
     ip_address = socket.gethostbyname(str(host_fqdns))
     ip_list.append(ip_address)
@@ -47,7 +46,7 @@
     """
 
     # IP address netmask format: '0.0.0.0/255.255.252.0'
-    return ipaddress.ip_network("0.0.0.0/" + netmask).prefixlen
+    return ipaddress.ip_network('0.0.0.0/' + netmask).prefixlen
 
 
 def get_netmask_address(prefix_len):
@@ -59,7 +58,7 @@
     """
 
     # IP address netmask format: '0.0.0.0/24'
-    return ipaddress.ip_network("0.0.0.0/" + prefix_len).netmask
+    return ipaddress.ip_network('0.0.0.0/' + prefix_len).netmask
 
 
 def parse_nping_output(output):
@@ -102,26 +101,20 @@
 
     lines = output.split("\n")
     # Obtain only the lines of interest.
-    lines = list(
-        filter(
-            lambda x: re.match(r"(Max rtt|Raw packets|TCP connection)", x),
-            lines,
-        )
-    )
+    lines = list(filter(lambda x: re.match(r"(Max rtt|Raw packets|TCP connection)", x),
+                        lines))
 
     key_value_list = []
     for line in lines:
         key_value_list += line.split("|")
     nping_result = vf.key_value_list_to_dict(key_value_list)
     # Extract percent_lost/percent_failed value from lost/failed field.
-    if "lost" in nping_result:
-        nping_result["percent_lost"] = float(
-            nping_result["lost"].split(" ")[-1].strip("()%")
-        )
+    if 'lost' in nping_result:
+        nping_result['percent_lost'] = \
+            float(nping_result['lost'].split(" ")[-1].strip("()%"))
     else:
-        nping_result["percent_failed"] = float(
-            nping_result["failed"].split(" ")[-1].strip("()%")
-        )
+        nping_result['percent_failed'] = \
+            float(nping_result['failed'].split(" ")[-1].strip("()%"))
     return nping_result
 
 
@@ -165,7 +158,7 @@
                                     command.  Do a 'man nping' for details.
     """
 
-    command_string = gc.create_command_string("nping", host, options)
+    command_string = gc.create_command_string('nping', host, options)
     rc, output = gc.shell_cmd(command_string, print_output=0, ignore_err=0)
     if parse_results:
         return parse_nping_output(output)
@@ -212,9 +205,7 @@
     (etc.)
     """
 
-    stdout, stderr, rc = bsu.bmc_execute_command(
-        "cat /usr/share/ipmi-providers/channel_config.json"
-    )
+    stdout, stderr, rc = bsu.bmc_execute_command("cat /usr/share/ipmi-providers/channel_config.json")
     return json.loads(stdout)
 
 
@@ -224,11 +215,7 @@
      this function.
     """
 
-    return vf.filter_struct(
-        get_channel_config(),
-        "[('medium_type', 'other-lan|lan-802.3')]",
-        regex=1,
-    )
+    return vf.filter_struct(get_channel_config(), "[('medium_type', 'other-lan|lan-802.3')]", regex=1)
 
 
 def get_channel_access_config(file_name):