Update split_files_to_excel.py

split_files_to_excel.py

@@ -581,7 +581,7 @@ def split_in_df(files):
         if file_path.endswith('.zip'):
             extracted_files = extract_zip(file_path)
             processed_files.extend(extracted_files)
-            base_folders.extend([[os.path.splitext(os.path.basename(file_path))[0]] * len(extracted_files)])
+            base_folders.extend([os.path.splitext(os.path.basename(file_path))[0]] * len(extracted_files))
         else:
             processed_files.append(file_path)
             base_folders.append("")