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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 datacenter_configured(name):
    '''
    Makes sure a datacenter exists.

    If the state is run by an ``esxdatacenter`` minion, the name of the
    datacenter is retrieved from the proxy details, otherwise the datacenter
    has the same name as the state.

    Supported proxies: esxdatacenter

    name:
        Datacenter name. Ignored if the proxytype is ``esxdatacenter``.
    '''
    proxy_type = __salt__['vsphere.get_proxy_type']()
    if proxy_type == 'esxdatacenter':
        dc_name = __salt__['esxdatacenter.get_details']()['datacenter']
    else:
        dc_name = name
    log.info('Running datacenter_configured for datacenter \'%s\'', dc_name)
    ret = {'name': name,
           'changes': {},
           'result': None,
           'comment': 'Default'}
    comments = []
    si = None
    try:
        si = __salt__['vsphere.get_service_instance_via_proxy']()
        dcs = __salt__['vsphere.list_datacenters_via_proxy'](
            datacenter_names=[dc_name], service_instance=si)
        if not dcs:
            if __opts__['test']:
                comments.append('State will create '
                                'datacenter \'{0}\'.'.format(dc_name))
            else:
                log.debug('Creating datacenter \'%s\'', dc_name)
                __salt__['vsphere.create_datacenter'](dc_name, si)
                comments.append('Created datacenter \'{0}\'.'.format(dc_name))
            log.info(comments[-1])
            ret['changes'].update({'new': {'name': dc_name}})
        else:
            comments.append('Datacenter \'{0}\' already exists. Nothing to be '
                            'done.'.format(dc_name))
            log.info(comments[-1])
        __salt__['vsphere.disconnect'](si)
        ret['comment'] = '\n'.join(comments)
        ret['result'] = None if __opts__['test'] and ret['changes'] else True
        return ret
    except salt.exceptions.CommandExecutionError as exc:
        log.error('Error: %s', exc)
        if si:
            __salt__['vsphere.disconnect'](si)
        ret.update({
            'result': False if not __opts__['test'] else None,
            'comment': six.text_type(exc)})
        return ret