I faced similar problems with the SWIG bindings ... almost impossible to add any functionality and they lack quite a lot of features. That's why I started a new

I faced similar problems with the SWIG bindings ... almost impossible to add any functionality and they lack quite a lot of features. That's why I started a new set of Python bindings, based off the old ones and using pybind11: https://github.com/wolfv/pygal https://github.com/wolfv/pygal