diff --git a/scripts/nbhelper/utils.py b/scripts/nbhelper/utils.py
index 5614ba9..d44bc96 100644
--- a/scripts/nbhelper/utils.py
+++ b/scripts/nbhelper/utils.py
@@ -6,11 +6,13 @@
 # utils.py
 # The utility functions shared among nbhelper objects
 
-import re
-import logging
 import argparse
-import pynetbox
+import logging
+import re
+import sys
+
 import requests
+import pynetbox
 
 from ruamel import yaml
 
@@ -36,7 +38,7 @@
 
     for require_args in ["api_endpoint", "token", "tenant_name"]:
         if not netbox_config.get(require_args):
-            logger.error("The require argument: %s was not set. Stop." % require_args)
+            logger.error("The require argument: %s was not set. Stop.", require_args)
             sys.exit(1)
 
     netboxapi = pynetbox.api(
@@ -53,7 +55,7 @@
     return args
 
 
-def parse_cli_args(extra_args={}):
+def parse_cli_args(extra_args):
     """
     parse CLI arguments.  Can add extra arguments with a option:kwargs dict
     """
@@ -115,5 +117,5 @@
 
 class AttrDict(dict):
     def __init__(self, *args, **kwargs):
-        super(AttrDict, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         self.__dict__ = self