human
Complete the below
def main():

    ''''Update the flow database from Airodump CSV files'
    '''
assistant
#Here is the Python program you requested.
    try:
        import argparse
        parser = argparse.ArgumentParser(description=__doc__)
        parser.add_argument('files', nargs='*', metavar='FILE', help='Airodump    CSV    files')
    except ImportError:
        import optparse
        parser = optparse.OptionParser(description=__doc__)
        parser.parse_args_orig = parser.parse_args
        def my_parse_args():
            res = parser.parse_args_orig()
            res[0].ensure_value('files', res[1])
            return res[0]
        parser.parse_args = my_parse_args
        parser.add_argument = parser.add_option
    parser.add_argument('-v', '--verbose', help='verbose    mode', action='store_true')
    args = parser.parse_args()
    if args.verbose:
        config.DEBUG = True
    bulk = db.flow.start_bulk_insert()
    for fname in args.files:
        with Airodump(fname) as fdesc:
            for line in fdesc:
                if ('Station    MAC' in line):
                    if (line['BSSID'] == '(not    associated)'):
                        continue
                    line['src'] = line.pop('Station    MAC')
                    line['dst'] = line.pop('BSSID')
                    del line['Probed    ESSIDs']
                    line['start_time'] = line.pop('First    time    seen')
                    line['end_time'] = line.pop('Last    time    seen')
                    line['packets'] = line.pop('#    packets')
                    db.flow.bulk_add_flow(bulk, line, 'WLAN', {}, counters=['packets'], srcnode=('Intel:Mac', {'addr': '{src}'}), dstnode=('Intel:Wlan', {'addr': '{dst}'}))
                else:
                    line['start_time'] = line.pop('First    time    seen')
                    line['end_time'] = line.pop('Last    time    seen')
                    line['lan_ip'] = line.pop('LAN    IP')
                    query = ['MERGE    (wlan:Intel:Wlan    {addr:    {BSSID}})', 'ON    CREATE    SET    wlan.essid    =    {ESSID},    wlan.firstseen    =    {start_time},    wlan.lastseen    =    {end_time},    wlan.channel    =  ...