localgb.py 文件源码

def need_to_update_release():
    ftp = FTP('ftp.ncbi.nlm.nih.gov')
    ftp.login()
    ftp.cwd('genbank')

    """
    Check whether the user currently has the latest GB release (in which case
    we only need to download the daily updates) or whether they have an old
    release or no release, in which case we need to download everything)
    """
    try:
        current_release_number = int(open('GB_Release_Number').read())
        logging.info(
            'You currently have GB release number {}'
            .format(current_release_number)
            )

    except IOError:
        logging.info('No current release, downloading the files')
        return True

    latest_release_file = StringIO()
    ftp.retrlines('RETR GB_Release_Number', latest_release_file.write)
    latest_release_number = int(latest_release_file.getvalue())
    logging.info('Latest release number is {}'.format(latest_release_number))

    if current_release_number == latest_release_number:
        logging.info('You have the latest release, getting daily updates')
        return False
    else:
        logging.info('New release available, downloading the files')
        return True