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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _add_payload_files(zip_file, payload_info_list):
 """Add the payload files to the zip."""

    payload_byte_count = 0
    payload_file_count = 0
    for payload_info_dict in payload_info_list:
        zip_file.write_iter(payload_info_dict['path'], payload_info_dict['iter'])
        payload_byte_count += payload_info_dict['iter'].size
        payload_file_count += 1
    return payload_byte_count, payload_file_count