def METHOD_NAME(input_dir, output_zipfile, delete=False):
    """Zips subdirectories of input_dir to output_zipfile
    (without compression).
    Travels into subdirectories, but not sub-subdirectories.
    Skips any other files in directory.
    :param delete: If True, delete original directories
    """
    with zipfile.ZipFile(output_zipfile, mode='w') as zp:
        for dirn in os.listdir(input_dir):
            full_dirn = os.path.join(input_dir, dirn)
            if not osp.isdir(full_dirn):
                continue
            for fn in os.listdir(full_dirn):
                zp.write(os.path.join(full_dirn, fn),
                         arcname=os.path.join(dirn, fn))
            if delete:
                shutil.rmtree(full_dirn)