Replaced caching of a property with @cached_property.

from django.contrib import gis

from django.utils import six

from django.utils._os import upath

from django.utils.functional import cached_property

# This global used to store reference geometry data.

GEOMETRIES = None

# Path where reference test data is located.

TEST_DATA = os.path.join(os.path.dirname(upath(gis.__file__)), 'tests', 'data')

    Mixin used for GEOS/GDAL test cases that defines a `geometries`

    property, which returns and/or loads the reference geometry data.

    """

    @property

    @cached_property

    def geometries(self):

        global GEOMETRIES

        if GEOMETRIES is None:

        # Load up the test geometry data from fixture into global.

        with open(os.path.join(TEST_DATA, 'geometries.json')) as f:

            geometries = json.load(f)

            GEOMETRIES = TestGeomSet(**strconvert(geometries))

        return GEOMETRIES

        return TestGeomSet(**strconvert(geometries))