Clean up the code.

helper/file_helper.py

@@ -1,5 +1,5 @@
-import os
 import datetime
+import os
 from pathlib import Path
 
 
@@ -12,6 +12,6 @@ def delete_files_older_than_one_day(directory):
             file_name = file_path.name
             file_modified_time = datetime.datetime.fromtimestamp(file_path.stat().st_mtime)
             time_difference = current_time - file_modified_time
-            if time_difference.days > 1  and "placeholder" not in file_name:
+            if time_difference.days > 1 and "placeholder" not in file_name:
                 file_path.unlink()
-                print(f"Deleted file: {file_path}")
+                print(f"Deleted file: {file_path}")