(fix): no __len__ on new zarr arrays

scverse · Dec 8, 2024 · 434d15c · 434d15c
1 parent 5c2a8b3
commit 434d15c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/anndata/_core/sparse_dataset.py b/src/anndata/_core/sparse_dataset.py
@@ -533,7 +533,7 @@ def append(self, sparse_matrix: ss.csr_matrix | ss.csc_matrix | SpArray) -> None
             )
         [indptr_offset] = self.group["indices"].shape
         if self.group["indptr"].dtype == np.int32:
-            new_nnz = indptr_offset + len(sparse_matrix.indices)
+            new_nnz = indptr_offset + sparse_matrix.indices.shape[0]
             if new_nnz >= np.iinfo(np.int32).max:
                 raise OverflowError(
                     "This array was written with a 32 bit intptr, but is now large "