diff --git a/pre_commit_hooks/check_naming_convention.py b/pre_commit_hooks/check_naming_convention.py
index 52c80e5..9fdbf61 100644
--- a/pre_commit_hooks/check_naming_convention.py
+++ b/pre_commit_hooks/check_naming_convention.py
@@ -1,10 +1,13 @@
+from __future__ import annotations
+
+import os
 import re
 import sys
-import os
+
 
 def check_naming_convention(files):
     for file_path in files:
-        with open(file_path, 'r') as file:
+        with open(file_path) as file:
             lines = file.readlines()
             for line_num, line in enumerate(lines, start=1):
                 words = re.findall(r'\b[a-zA-Z0-9_]+\b', line)
@@ -13,8 +16,8 @@ def check_naming_convention(files):
                         continue  # Valid snake_case
                     elif re.match(r'^[A-Z][a-zA-Z0-9]*$', word):
                         if '_' in word:
-                            print(f"WARNING: CamelCase with underscores found in {os.path.basename(file_path)}:{line_num}: {word}")
+                            print(f'WARNING: CamelCase with underscores found in {os.path.basename(file_path)}:{line_num}: {word}')
                         continue  # Valid CamelCase
                     else:
-                        print(f"ERROR: Invalid naming convention in {os.path.basename(file_path)}:{line_num}: {word}")
+                        print(f'ERROR: Invalid naming convention in {os.path.basename(file_path)}:{line_num}: {word}')
                         sys.exit(1)