I was trying to implement a python module that would add a Datashading callback inspired on the DataShader Case Study in Python.
The callback function
gen_ds_image which accesses
iris_target_df. No issues with this as
iris_target_df is in the notebooks scope.
My issue is if I have a class that has a data frame as an attribute (
self._df). I’m not able to use that data frame inside the callback function because it needs to have the callback signature similar to
update_ds_image(layout, x_range, y_range, plot_width, plot_height).
I need to pass layout and I’m not able to pass self and access the data frame.
Is there any way I can access objects out of the layout scope (and not in the global scope) from an
The only way I can make this work is adding the data frame reference to the module scope with
globals()['df'] = self._df