## lookup_namespace_uri {#str}

Look up the namespace URI associated to the given prefix, starting from this node.


### Returns 


Returns namespace URI


```python
def lookup_namespace_uri(self, prefix):
    ...
```


| Parameter | Type | Description |
| :- | :- | :- |
| prefix | str | The prefix. |



### See Also
* module [`aspose.html`](../../)
* class [`HTMLAreaElement`](/html/python-net/aspose.html/htmlareaelement)