How to use the atlasapi.lib.AtlasPeriods function in atlasapi

#    print('Cluster name {}'.format(cluster))


pprint('------------Test get hosts by cluster-----------------')

# hosts = a.Hosts.host_list_by_cluster('monitoringtest')

print('-----------Test get metrics for a clusters hosts---------------')
a.Hosts.fill_host_list(for_cluster='monitoringtest')

#a.Hosts.get_measurement_for_hosts(measurement=AtlasMeasurementTypes.Network.bytes_out
#                                  , period=AtlasPeriods.HOURS_1, granularity=AtlasGranularities.FIVE_MINUTE)

for hostObj in a.Hosts.host_list:
    hostObj.get_measurement_for_host(measurement=AtlasMeasurementTypes.Network.bytes_out,
                                  period=AtlasPeriods.HOURS_1, granularity=AtlasGranularities.FIVE_MINUTE)



the = list()

API_KEY = getenv('ATLAS_KEY', '4e09ab9f-bf2c-41da-90bf-7d7974c330d2')
GROUP_ID = getenv('ATLAS_GROUP', '5b1e92c13b34b93b0230e6e1')
from atlasapi.lib import AtlasPeriods, AtlasUnits, AtlasGranularities
from atlasapi.measurements import AtlasMeasurementTypes

if not USER or not API_KEY or not GROUP_ID:
    raise EnvironmentError('In order to run this smoke test you need ATLAS_USER, AND ATLAS_KEY env variables'
                           'your env variables are {}'.format(environ.__str__()))

a = Atlas(USER,API_KEY,GROUP_ID)


pprint('----------MeasureMents')
output = a.Hosts._get_measurement_for_host(a.Hosts.host_list[0]
                                           ,measurement=AtlasMeasurementTypes.Memory.resident,iterable=True
                                           ,period=AtlasPeriods.WEEKS_4,granularity=AtlasGranularities.MINUTE)

for each in a.Hosts.host_list:
    pprint(each.__dict__)

def get_measurement_for_host(self, granularity: AtlasGranularities = AtlasGranularities.HOUR,
                                 period: AtlasPeriods = AtlasPeriods.WEEKS_1,
                                 measurement: AtlasMeasurementTypes = AtlasMeasurementTypes.Cache.dirty,
                                 pageNum: int = Settings.pageNum,
                                 itemsPerPage: int = Settings.itemsPerPage,
                                 iterable: bool = True) -> Union[dict, Iterable[AtlasMeasurement]]:
        """Get  measurement(s) for a host

        Returns measurements for the Host object.

        url: https://docs.atlas.mongodb.com/reference/api/process-measurements/


        Accepts either a single measurement, but will retrieve more than one measurement
        if the measurement (using the AtlasMeasurementTypes class)

        /api/atlas/v1.0/groups/{GROUP-ID}/processes/{HOST}:{PORT}/measurements

def _get_measurement_for_host(self, host_obj: Host, granularity: AtlasGranularities = AtlasGranularities.HOUR,
                                      period: AtlasPeriods = AtlasPeriods.WEEKS_1,
                                      measurement: AtlasMeasurementTypes = AtlasMeasurementTypes.Cache.dirty,
                                      pageNum: int = Settings.pageNum,
                                      itemsPerPage: int = Settings.itemsPerPage,
                                      iterable: bool = True) -> Union[dict, Iterable[AtlasMeasurement]]:
            """Get  measurement(s) for a host

            Internal use only, should come from the host obj itself.

            Returns measurements for the passed Host object.

            url: https://docs.atlas.mongodb.com/reference/api/process-measurements/


            Accepts either a single measurement, but will retrieve more than one measurement
            if the measurement (using the AtlasMeasurementTypes class)