[Configobj-develop] Optional Sections?

[Sumit's M. L. <li...@ba...>]

I've been looking through the docs and StackOverflow and I'm still a
little stumped on this. Can I have an optional section in my config
specification? For example, say I had this as my configspec:

    config_specification = """
[General]

sample_rate = float

[Data]
  [[__many__]]
    type = option('sense.xml')
      [[[Identifier]]]
        type = option("name", "mac", "uuid")
        adapter = string(default='')
        id   = string(default='')
        file = string(default='')
      [[[Location]]]
        type = option("virtual", "gps")
        longitude = string(default='')
        latitude = string(default='')
        altitude = string(default='')
        speed = string(default='')
        climb = string(default='')
        track = string(default='')
        longutide_error = string(default='')
        latitude_error = string(default='')
        altitude_error = string(default='')
        speed_error = string(default='')
        climb_track = string(default='')
        track_error = string(default='')
"""

Is there a way to make [[[Locaiton]]] optional, so it can be missing and
still pass validation (assuming that I do validation like so):

        cfg = ConfigObj(filename,
configspec=BootStrap.config_specification.split('\n'))

        test = cfg.validate(Validator())

        valid = True
        for (section_list, key, _) in flatten_errors(cfg, test):
            if key is not None:
                logging.error('Invalid value for key {0} in section
{1}'.format(key, ', '.join(section_list)))
                valid = False
            else:
                logging.error('Section {0} failed validation'.format(',
'.join(section_list)))
                valid = False
        if not valid:
            exit(3)

Thanks
Sumit