Function check_alignment

xarray/core/datatree.py:167–193

(
    path: str,
    node_ds: Dataset,
    parent_ds: Dataset | None,
    children: Mapping[str, DataTree],
)

def check_alignment(
    path: str,
    node_ds: Dataset,
    parent_ds: Dataset | None,
    children: Mapping[str, DataTree],
) -> None:
    if parent_ds is not None:
        try:
            align(node_ds, parent_ds, join="exact", copy=False)
        except ValueError as e:
            node_repr = _indented(_without_header(repr(node_ds)))
            parent_repr = _indented(dims_and_coords_repr(parent_ds))
            raise ValueError(
                f"group {path!r} is not aligned with its parents:\n"
                f"Group:\n{node_repr}\nFrom parents:\n{parent_repr}"
            ) from e

    if children:
        if parent_ds is not None:
            base_ds = _inherited_dataset(node_ds, parent_ds)
        else:
            base_ds = node_ds

        for child_name, child in children.items():
            child_path = str(NodePath(path) / child_name)
            child_ds = child.to_dataset(inherit=False)
            check_alignment(child_path, child_ds, base_ds, child.children)


def _deduplicate_inherited_coordinates(child: DataTree, parent: DataTree) -> None: