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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 property_absent(name, property):
    '''
    Ensure property is absent

    name : string
        name of the zone
    property : string
        name of property

    .. note::
        This does a zoneacfg clear call. So the property may be reset to a default value!
        Does has the side effect of always having to be called.

    '''
    ret = {'name': name,
           'changes': {},
           'result': None,
           'comment': ''}

    zones = __salt__['zoneadm.list'](installed=True, configured=True)
    if name in zones:
        ## zone exists
        zonecfg = __salt__['zonecfg.info'](name, show_all=True)
        if property in zonecfg:
            if __opts__['test']:
                ret['result'] = True
            else:
                # clear property
                zonecfg_res = __salt__['zonecfg.clear_property'](name, property)
                zonecfg_new = __salt__['zonecfg.info'](name, show_all=True)
                ret['result'] = zonecfg_res['status']
                if 'messages' in zonecfg_res:
                    ret['comment'] = zonecfg_res['message']
            if ret['result']:
                if property not in zonecfg_new:
                    ret['changes'][property] = None
                elif zonecfg[property] != zonecfg_new[property]:
                    ret['changes'][property] = zonecfg_new[property]
                if ret['comment'] == '':
                    ret['comment'] = 'The property {0} was cleared!'.format(property)
            elif ret['comment'] == '':
                if ret['comment'] == '':
                    ret['comment'] = 'The property {0} did not get cleared!'.format(property)
        else:
            ret['result'] = True
            ret['comment'] = 'The property {0} does not exist!'.format(property)
    else:
        ## zone does not exist
        ret['result'] = False
        ret['comment'] = 'The zone {0} is not in the configured, installed, or booted state.'.format(name)

    return ret