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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 settings(ctx, slot, new_access_code, delete_access_code, enter, pacing, force):
 """ Update the settings for a slot. Change the settings for a slot without changing the stored secret. All settings not specified will be written with default values. """

    controller = ctx.obj['controller']

    if (new_access_code is not None) and delete_access_code:
        ctx.fail('--new-access-code conflicts with --delete-access-code.')

    if not controller.slot_status[slot - 1]:
        ctx.fail('Not possible to update settings on an empty slot.')

    if new_access_code is not None:
        if new_access_code == '':
            new_access_code = click.prompt(
                'Enter new access code', show_default=False, err=True)

        try:
            new_access_code = parse_access_code_hex(new_access_code)
        except Exception as e:
            ctx.fail('Failed to parse access code: ' + str(e))

    force or click.confirm(
        'Update the settings for slot {}? '
        'All existing settings will be overwritten.'.format(slot), abort=True,
        err=True)
    click.echo('Updating settings for slot {}...'.format(slot))

    if pacing is not None:
        pacing = int(pacing)

    try:
        controller.update_settings(slot, enter=enter, pacing=pacing)
    except YkpersError as e:
        _failed_to_write_msg(ctx, e)

    if new_access_code:
        try:
            controller.set_access_code(slot, new_access_code)
        except Exception as e:
            logger.error('Failed to set access code', exc_info=e)
            ctx.fail('Failed to set access code: ' + str(e))

    if delete_access_code:
        try:
            controller.delete_access_code(slot)
        except Exception as e:
            logger.error('Failed to delete access code', exc_info=e)
            ctx.fail('Failed to delete access code: ' + str(e))