## custom_engine property


The custom formula calculation engine to extend the default calculation engine of Aspose.Cells.
### Definition:
```python
@property
def custom_engine(self):
    ...
@custom_engine.setter
def custom_engine(self, value):
    ...
```

### See Also
* module [`aspose.cells`](../../)
* class [`CalculationOptions`](/cells/python-net/aspose.cells/calculationoptions)