python class methods operator

[wangjiawen2013]

Hi,
Plotnine uses + operator to concatenate multiple graphical elements to keep the consistant API with R ggplot2, while python altair (https://altair-viz.github.io/user_guide/data.html#user-guide-data) uses . instead. It is known that the . operator is more natural for python Classes. Just curious and want to know how do you make + operator available for python Classes. Operator overloading or some other techniques ?

[TyberiusPrime]

They simply implement __add__ or __radd__, see https://docs.python.org/3/reference/datamodel.html#object.__add__

There are wrappers around plotnine that convert it into a fluent API (i.e. methods that return self,so you can chain them like plot.add_point().scale_y_continous().render) such as dppd_plotnine.