How to use the pywws.timezone.timezone.to_local function in pywws

if o in ('-h', '--help'):
            print(__usage__.strip())
            return 0
    # check arguments
    if len(args) != 1:
        print("Error: 1 argument required", file=sys.stderr)
        print(__usage__.strip(), file=sys.stderr)
        return 2
    data_dir = args[0]
    with pywws.storage.pywws_context(data_dir) as context:
        params = context.params
        pywws.localisation.set_application_language(params)
        hourly_data = context.hourly_data
        idx = hourly_data.before(datetime.max)
        print('Zambretti (current):', zambretti(params, hourly_data[idx]))
        idx = timezone.to_local(idx)
        if idx.hour < 8 or (idx.hour == 8 and idx.minute < 30):
            idx -= timedelta(hours=24)
        idx = idx.replace(hour=9, minute=0, second=0)
        idx = timezone.to_naive(idx)
        idx = hourly_data.nearest(idx)
        lcl = timezone.to_local(idx)
        print('Zambretti (at %s):' % lcl.strftime('%H:%M %Z'), zambretti(
            params, hourly_data[idx]))
    return 0

print(__usage__.strip(), file=sys.stderr)
        return 2
    data_dir = args[0]
    with pywws.storage.pywws_context(data_dir) as context:
        params = context.params
        pywws.localisation.set_application_language(params)
        hourly_data = context.hourly_data
        idx = hourly_data.before(datetime.max)
        print('Zambretti (current):', zambretti(params, hourly_data[idx]))
        idx = timezone.to_local(idx)
        if idx.hour < 8 or (idx.hour == 8 and idx.minute < 30):
            idx -= timedelta(hours=24)
        idx = idx.replace(hour=9, minute=0, second=0)
        idx = timezone.to_naive(idx)
        idx = hourly_data.nearest(idx)
        lcl = timezone.to_local(idx)
        print('Zambretti (at %s):' % lcl.strftime('%H:%M %Z'), zambretti(
            params, hourly_data[idx]))
    return 0

file_encoding = 'ascii'
                elif command[0] == 'roundtime':
                    if eval(command[1]):
                        round_time = timedelta(seconds=30)
                    else:
                        round_time = None
                elif command[0] == 'jump':
                    prevdata = data
                    idx, valid_data = jump(idx, int(command[1]))
                    data = data_set[idx]
                elif command[0] == 'goto':
                    prevdata = data
                    time_str = command[1]
                    if '%' in time_str:
                        if local_time:
                            lcl = timezone.to_local(idx)
                        else:
                            lcl = timezone.to_utc(idx)
                        time_str = lcl.strftime(time_str)
                    new_idx = pywws.weatherstation.WSDateTime.from_csv(time_str)
                    if local_time:
                        new_idx = timezone.to_naive(timezone.localize(new_idx))
                    new_idx = data_set.after(new_idx)
                    if new_idx:
                        idx = new_idx
                        data = data_set[idx]
                        valid_data = True
                    else:
                        valid_data = False
                elif command[0] == 'loop':
                    loop_count = int(command[1])
                    loop_start = tmplt.tell()

# output a value
                    if not valid_data:
                        continue
                    # format is: key fmt_string no_value_string conversion
                    # get value
                    if command[0] == 'calc':
                        x = eval(command[1])
                        del command[1]
                    else:
                        x = data[command[0]]
                    # adjust time
                    if isinstance(x, datetime):
                        if round_time:
                            x += round_time
                        if local_time:
                            x = timezone.to_local(x)
                        else:
                            x = timezone.to_utc(x)
                    # convert data
                    if x is not None and len(command) > 3:
                        x = eval(command[3])
                    # get format
                    fmt = u'%s'
                    if len(command) > 1:
                        fmt = command[1]
                    # write output
                    if x is None:
                        if len(command) > 2:
                            yield command[2]
                    elif isinstance(x, datetime):
                        if sys.version_info[0] < 3:
                            fmt = fmt.encode(file_encoding)