[python] Check for list/tuple arguments in registrars (#3518)

apis/python/src/tiledbsoma/io/_registration/ambient_label_mappings.py

@@ -391,7 +391,7 @@ def _acquire_experiment_mappings(
     def from_anndata_appends_on_experiment(
         cls,
         experiment_uri: str | None,
-        adatas: Sequence[ad.AnnData],
+        adatas: Sequence[ad.AnnData] | ad.AnnData,
         *,
         measurement_name: str,
         obs_field_name: str,
@@ -404,6 +404,13 @@ def from_anndata_appends_on_experiment(
         is ``None`` then you will be computing registrations only for the input
         ``AnnData`` objects. If ``experiment_uri`` is not ``None`` then it is
         an error if the experiment is not accessible."""
+        # typeguard doesn't help at runtime. Check this crucial user-facing API.
+        if isinstance(adatas, ad.AnnData):
+            adatas = [adatas]
+        elif not isinstance(adatas, (list, tuple)):
+            raise ValueError(
+                f"adatas must be list or tuple of AnnData, or a single AnnData; got {type(adatas)}"
+            )
 
         registration_data = cls._acquire_experiment_mappings(
             experiment_uri,
@@ -455,7 +462,7 @@ def from_h5ad_append_on_experiment(
     def from_h5ad_appends_on_experiment(
         cls,
         experiment_uri: str | None,
-        h5ad_file_names: Sequence[str],
+        h5ad_file_names: Sequence[str] | str,
         *,
         measurement_name: str,
         obs_field_name: str,
@@ -465,6 +472,13 @@ def from_h5ad_appends_on_experiment(
     ) -> Self:
         """Extends registration data from the baseline, already-written SOMA
         experiment to include multiple H5AD input files."""
+        # typeguard doesn't help at runtime. Check this crucial user-facing API.
+        if isinstance(h5ad_file_names, str):
+            h5ad_file_names = [h5ad_file_names]
+        elif not isinstance(h5ad_file_names, (list, tuple)):
+            raise ValueError(
+                f"h5ad_file_names must be list or tuple of string, or a single string; got {type(h5ad_file_names)}"
+            )
 
         registration_data = cls._acquire_experiment_mappings(
             experiment_uri,

apis/python/src/tiledbsoma/io/ingest.py

@@ -188,7 +188,7 @@ def __init__(
 # entrypoints for append-mode soma_joinid registration.
 def register_h5ads(
     experiment_uri: str | None,
-    h5ad_file_names: Sequence[str],
+    h5ad_file_names: Sequence[str] | str,
     *,
     measurement_name: str,
     obs_field_name: str,
@@ -212,7 +212,7 @@ def register_h5ads(
 
 def register_anndatas(
     experiment_uri: str | None,
-    adatas: Sequence[ad.AnnData],
+    adatas: Sequence[ad.AnnData] | ad.AnnData,
     *,
     measurement_name: str,
     obs_field_name: str,

apis/python/tests/test_registration_mappings.py

@@ -1342,3 +1342,65 @@ def test_multimodal_names(tmp_path, conftest_pbmc3k_adata):
         assert exp.obs.count == len(adata_protein.obs)
         assert exp.ms["RNA"].var.count == len(adata_rna.var)
         assert exp.ms["protein"].var.count == len(adata_protein.var)
+
+
+def test_registration_lists_and_tuples(tmp_path):
+    obs_field_name = "cell_id"
+    var_field_name = "gene_id"
+
+    exp_uri = create_soma_canned(1, obs_field_name, var_field_name)
+    adata = create_anndata_canned(2, obs_field_name, var_field_name)
+    h5ad_file_name = create_h5ad_canned(2, obs_field_name, var_field_name)
+
+    rd1 = tiledbsoma.io.register_anndatas(
+        experiment_uri=exp_uri,
+        adatas=[adata],
+        measurement_name="measname",
+        obs_field_name=obs_field_name,
+        var_field_name=var_field_name,
+    )
+
+    rd2 = tiledbsoma.io.register_anndatas(
+        experiment_uri=exp_uri,
+        adatas=(adata,),
+        measurement_name="measname",
+        obs_field_name=obs_field_name,
+        var_field_name=var_field_name,
+    )
+
+    rd3 = tiledbsoma.io.register_anndatas(
+        experiment_uri=exp_uri,
+        adatas=adata,
+        measurement_name="measname",
+        obs_field_name=obs_field_name,
+        var_field_name=var_field_name,
+    )
+    assert rd1 == rd2
+    assert rd2 == rd3
+
+    rd4 = tiledbsoma.io.register_h5ads(
+        experiment_uri=exp_uri,
+        h5ad_file_names=[h5ad_file_name],
+        measurement_name="measname",
+        obs_field_name=obs_field_name,
+        var_field_name=var_field_name,
+    )
+
+    rd5 = tiledbsoma.io.register_h5ads(
+        experiment_uri=exp_uri,
+        h5ad_file_names=(h5ad_file_name,),
+        measurement_name="measname",
+        obs_field_name=obs_field_name,
+        var_field_name=var_field_name,
+    )
+
+    rd6 = tiledbsoma.io.register_h5ads(
+        experiment_uri=exp_uri,
+        h5ad_file_names=h5ad_file_name,
+        measurement_name="measname",
+        obs_field_name=obs_field_name,
+        var_field_name=var_field_name,
+    )
+
+    assert rd4 == rd5
+    assert rd5 == rd6