diff --git a/bin/generate_inventory b/bin/generate_inventory
index 0c14454..80f725e 100755
--- a/bin/generate_inventory
+++ b/bin/generate_inventory
@@ -4,67 +4,57 @@
 fields from the YAML phosphor-dbus-interfaces repository.
 """
 
-import json
-import os
-import sys
-
-import yaml
 from gen_print import *
 
+import sys
+import os
+import yaml
+import json
+
 lib_path = sys.path[0] + "/../lib"
 sys.path.insert(0, lib_path)
 
 # This list will be longer when more development codes are available.
-inventory_items = ["fru", "core", "fan", "fan_wc", "gpu"]
+inventory_items = ['fru', 'core', 'fan', 'fan_wc', 'gpu']
 print_var(inventory_items)
-fru_inventory_file_path = "inventory.py"
+fru_inventory_file_path = 'inventory.py'
 print_var(fru_inventory_file_path)
 
 # Properties inventory list
 yaml_inventory_list = []
 
 # Clone the phosphor-dbus-interfaces repository
-cmd_buf = "git clone https://github.com/openbmc/phosphor-dbus-interfaces"
+cmd_buf = 'git clone https://github.com/openbmc/phosphor-dbus-interfaces'
 os.system(cmd_buf)
 
-repo_subdir_path = "/phosphor-dbus-interfaces/xyz/openbmc_project/"
+repo_subdir_path = '/phosphor-dbus-interfaces/xyz/openbmc_project/'
 base_dir_path = os.getcwd() + repo_subdir_path
 
 # yaml file paths for FRU
-yaml_fru_list = [
-    "Inventory/Item.interface.yaml",
-    "Inventory/Decorator/Asset.interface.yaml",
-    "Inventory/Decorator/Revision.interface.yaml",
-    "Inventory/Decorator/Replaceable.interface.yaml",
-    "Inventory/Decorator/Cacheable.interface.yaml",
-    "State/Decorator/OperationalStatus.interface.yaml",
-]
+yaml_fru_list = ['Inventory/Item.interface.yaml',
+                 'Inventory/Decorator/Asset.interface.yaml',
+                 'Inventory/Decorator/Revision.interface.yaml',
+                 'Inventory/Decorator/Replaceable.interface.yaml',
+                 'Inventory/Decorator/Cacheable.interface.yaml',
+                 'State/Decorator/OperationalStatus.interface.yaml', ]
 
 # yaml file paths for CORE.
-yaml_core_list = [
-    "Inventory/Item.interface.yaml",
-    "State/Decorator/OperationalStatus.interface.yaml",
-]
+yaml_core_list = ['Inventory/Item.interface.yaml',
+                  'State/Decorator/OperationalStatus.interface.yaml', ]
 
 # yaml file paths for fan.
-yaml_fan_list = [
-    "Inventory/Item.interface.yaml",
-    "Inventory/Decorator/MeetsMinimumShipLevel.interface.yaml",
-    "State/Decorator/OperationalStatus.interface.yaml",
-]
+yaml_fan_list = ['Inventory/Item.interface.yaml',
+                 'Inventory/Decorator/MeetsMinimumShipLevel.interface.yaml',
+                 'State/Decorator/OperationalStatus.interface.yaml', ]
 
 # yaml file paths for fan_wc (fans in water-cooled system).
-yaml_fan_wc_list = [
-    "Inventory/Item.interface.yaml",
-    "Inventory/Decorator/MeetsMinimumShipLevel.interface.yaml",
-]
+yaml_fan_wc_list = ['Inventory/Item.interface.yaml',
+                    'Inventory/Decorator/MeetsMinimumShipLevel.interface.yaml', ]
 
 # yaml file paths for GPU.
-yaml_gpu_list = [
-    "Inventory/Item.interface.yaml",
-    "Inventory/Decorator/Replaceable.interface.yaml",
-    "State/Decorator/OperationalStatus.interface.yaml",
-]
+yaml_gpu_list = ['Inventory/Item.interface.yaml',
+                 'Inventory/Decorator/Replaceable.interface.yaml',
+                 'State/Decorator/OperationalStatus.interface.yaml', ]
 
 # Append to inventory list
 yaml_inventory_list.append(yaml_fru_list)
@@ -89,18 +79,16 @@
         f = open(yaml_file_path)
         yaml_data = yaml.safe_load(f)
         f.close()
-        for item in range(0, len(yaml_data["properties"])):
-            tmp_data = yaml_data["properties"][item]["name"]
+        for item in range(0, len(yaml_data['properties'])):
+            tmp_data = yaml_data['properties'][item]['name']
             inventory_dict[str(inventory_items[inv_index])].append(tmp_data)
 
 # Pretty print json formatter
-data = json.dumps(
-    inventory_dict,
-    indent=4,
-    sort_keys=True,
-    default=str,
-    separators=(",", ":"),
-)
+data = json.dumps(inventory_dict,
+                  indent=4,
+                  sort_keys=True,
+                  default=str,
+                  separators=(',', ':'))
 
 # Check if there is mismatch in data vs expect list
 if len(inventory_dict) != len(inventory_items):
@@ -112,8 +100,8 @@
 # Write dictionary data to inventory file
 print("\nGenerated Inventory item json format\n")
 print(data)
-out = open(fru_inventory_file_path, "w")
-out.write("inventory_dict = ")
+out = open(fru_inventory_file_path, 'w')
+out.write('inventory_dict = ')
 out.write(data)
 
 out.close()