def test_views():
    X = np.array(X_list)
    adata = ad.AnnData(X, obs=obs_dict, var=var_dict, uns=uns_dict, dtype="int32")

    assert adata[:, 0].is_view
    assert adata[:, 0].X.tolist() == np.reshape([1, 4, 7], (3, 1)).tolist()

    adata[:2, 0].X = [0, 0]

    assert adata[:, 0].X.tolist() == np.reshape([0, 0, 7], (3, 1)).tolist()

    adata_subset = adata[:2, [0, 1]]

    assert adata_subset.is_view
    # now transition to actual object
    adata_subset.obs["foo"] = range(2)
    assert not adata_subset.is_view

    assert adata_subset.obs["foo"].tolist() == list(range(2))
def list_instances(
        self,
    ) -> Callable[[appengine.ListInstancesRequest], appengine.ListInstancesResponse]:
        r"""Return a callable for the list instances method over gRPC.

        Lists the instances of a version.

        Tip: To aggregate details about instances over time, see the
        `Stackdriver Monitoring
        API <https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list>`__.

        Returns:
            Callable[[~.ListInstancesRequest],
                    ~.ListInstancesResponse]:
                A function that, when called, will call the underlying RPC
                on the server.
        """
        # Generate a "stub function" on-the-fly which will actually make
        # the request.
        # gRPC handles serialization and deserialization, so we just need
        # to pass in the functions for each.
        if "list_instances" not in self._stubs:
            self._stubs["list_instances"] = self.grpc_channel.unary_unary(
                "/google.appengine.v1.Instances/ListInstances",
                request_serializer=appengine.ListInstancesRequest.serialize,
                response_deserializer=appengine.ListInstancesResponse.deserialize,
            )
        return self._stubs["list_instances"]