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textual.walk

Functions for walking the DOM.

Note

For most purposes you would be better off using query, which uses these functions internally.

walk_breadth_first

walk_breadth_first(
    root, filter_type=None, *, with_root=True
)

Walk the tree breadth first (children first).

Note

Avoid changing the DOM (mounting, removing etc.) while iterating with this function. Consider walk_children which doesn't have this limitation.

Parameters:

Name Type Description Default
root DOMNode

The root note (starting point).

required
filter_type type[WalkType] | None

Optional DOMNode subclass to filter by, or None for no filter.

None
with_root bool

Include the root in the walk.

True

Returns:

Type Description
Iterable[DOMNode] | Iterable[WalkType]

An iterable of DOMNodes, or the type specified in filter_type.

walk_depth_first

walk_depth_first(root, filter_type=None, *, with_root=True)

Walk the tree depth first (parents first).

Note

Avoid changing the DOM (mounting, removing etc.) while iterating with this function. Consider walk_children which doesn't have this limitation.

Parameters:

Name Type Description Default
root DOMNode

The root note (starting point).

required
filter_type type[WalkType] | None

Optional DOMNode subclass to filter by, or None for no filter.

None
with_root bool

Include the root in the walk.

True

Returns:

Type Description
Iterable[DOMNode] | Iterable[WalkType]

An iterable of DOMNodes, or the type specified in filter_type.