use iloc (#490)

scverse · Mar 17, 2024 · 8b69f3b · 8b69f3b
1 parent 4166360
commit 8b69f3b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/spatialdata/models/models.py b/src/spatialdata/models/models.py
@@ -795,7 +795,7 @@ def _validate_table_annotation_metadata(self, data: AnnData) -> None:
         if attr[self.INSTANCE_KEY] not in data.obs:
             raise ValueError(f"`{attr[self.INSTANCE_KEY]}` not found in `adata.obs`.")
         if (dtype := data.obs[attr[self.INSTANCE_KEY]].dtype) not in [np.int16, np.int32, np.int64, "O"] or (
-            dtype == "O" and (val_dtype := type(data.obs[attr[self.INSTANCE_KEY]][0])) != str
+            dtype == "O" and (val_dtype := type(data.obs[attr[self.INSTANCE_KEY]].iloc[0])) != str
         ):
             dtype = dtype if dtype != "O" else val_dtype
             raise TypeError(