## __init__ {#str-str}

Initializes a new instance of the [`ComplexTypeBase`](/cad/python-net/aspose.cad.xmp.types.complex/complextypebase) class.



```python
def __init__(self, prefix, namespace_uri):
    ...
```


| Parameter | Type | Description |
| :- | :- | :- |
| prefix | str | The prefix. |
| namespace_uri | str | The namespace URI. |
### Exceptions
| Exception | Description |
| :- | :- |
| ArgumentNullException | prefix is null
<br/>or
<br/>namespaceUri is null |





### See Also
* module [`aspose.cad.xmp.types.complex`](../../)
* class [`ComplexTypeBase`](/cad/python-net/aspose.cad.xmp.types.complex/complextypebase)