Why doesn't Pandas have anything to save the entire workspace to disk (like .RData). There are all these cool file formats like Castra, HDF5, even the vanilla

Why doesn't Pandas have anything to save the entire workspace to disk (like .RData). There are all these cool file formats like Castra, HDF5, even the vanilla pickle - but I don't see anything with a one shot save of the workspace (something like Dill) Is this an antipattern for Pandas?