The function update_display in the IPython.core.display_functions module updates an existing display using a specified object and display id.
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Here is a Python code template for the `update_display` function from the `IPython.core.display_functions` module:

```python
from IPython.core.display import update_display

# Define the object to update the display with
obj = ...

# Define the id of the display to update
display_id = ...

# Optional keyword arguments
kwargs = ...

# Call the function
update_display(obj, display_id=display_id, **kwargs)
```

Please replace the `...` with your actual values.