fix lint

Author: johnkerl

apis/python/src/tiledbsoma/util_arrow.py

@@ -88,9 +88,11 @@ def get_arrow_type_from_tiledb_dtype(tiledb_dtype: Union[str, np.dtype]) -> pa.D
     """
     TODO: COMMENT
     """
-    if tiledb_dtype == "ascii" or tiledb_dtype.name == "bytes":
+    if isinstance(tiledb_dtype, str) and tiledb_dtype == "ascii":
         # XXX TODO: temporary work-around until UTF8 support is native. GH #338.
         return pa.string()
+    elif tiledb_dtype.name == "bytes":
+        return pa.string()
     else:
         return pa.from_numpy_dtype(tiledb_dtype)