## previous_node {#}

Returns the previous node in the set and moves the position of the
NodeIterator backwards in the set.


### Returns 


The previous Node in the set being iterated over,
or null if there are no more members in that set.


```python
def previous_node(self):
    ...
```


### Exceptions
| Exception | Description |
| :- | :- |
| [`DOMException`](/html/python-net/aspose.html.dom/domexception) | INVALID_STATE_ERR: Raised if this method is called after the
<br/>detach method was invoked. |





### See Also
* module [`aspose.html.dom.traversal`](../../)
* class [`DOMException`](/html/python-net/aspose.html.dom/domexception)
* class [`INodeIterator`](/html/python-net/aspose.html.dom.traversal/inodeiterator)