a script to convert all the folders in a directory to CBZ files using 7-zip

cbz.py

import os
import subprocess

def convert_folders_to_cbz(folder_path=os.getcwd()):
    # Get all folders in the specified directory
    dirs = [d for d in os.listdir(folder_path) if os.path.isdir(os.path.join(folder_path, d))]

    for dir_name in dirs:
        folder_to_convert = os.path.join(folder_path, dir_name)
        zip_file = os.path.join(folder_path, f"{dir_name}.zip")
        cbz_file = os.path.join(folder_path, f"{dir_name}.cbz")

        # Include only PNG files in the ZIP archive with highest compression and multithreading
        command = ["7zz", "a", "-mx9", "-mmt=on", zip_file, os.path.join(folder_to_convert, "*.png")]

        try:
            subprocess.run(command, check=True)
            # Rename ZIP file to CBZ
            os.rename(zip_file, cbz_file)
            print(f"Converted folder '{folder_to_convert}' to CBZ file '{cbz_file}'")
        except subprocess.CalledProcessError as e:
            print(f"Error converting folder '{folder_to_convert}' to CBZ: {e}")
        except OSError as e:
            print(f"Error renaming ZIP to CBZ for folder '{folder_to_convert}': {e}")

# Example usage
convert_folders_to_cbz()