Zip a folder to a file

zip_folder_to_file.py

import os
import zipfile

def make_zipfile(output_filename, source_dir):
    relroot = os.path.abspath(os.path.join(source_dir, os.pardir))
    with zipfile.ZipFile(output_filename, "w", zipfile.ZIP_DEFLATED) as zip:
        for root, dirs, files in os.walk(source_dir):
            zip.write(root, os.path.relpath(root, relroot))
            for file in files:
                filename = os.path.join(root, file)
                if os.path.isfile(filename): 
                    arcname = os.path.join(os.path.relpath(root, relroot), file)
                    zip.write(filename, arcname)