Add asserts to avoid linting failure

torch_geometric/transforms/add_orthornormal_node_identifiers.py

@@ -34,6 +34,9 @@ def __init__(self, d_p: int, use_laplacian: bool = True):
         self._use_laplacian = use_laplacian
 
     def forward(self, data: Data) -> Data:
+        assert data.num_nodes is not None
+        assert data.edge_index is not None
+
         n = data.num_nodes
         if self._use_laplacian is True:
             node_ids = self._get_lap_eigenvectors(data.edge_index, n)