If you already use plotnine, or if this has piqued your interest, the next release (v0.16.0) will bring nice capabilities.
You can get a sneak peek by installing the pre-release:
pip install --pre plotnine
Details here: https://github.com/has2k1/plotnine/issues/1031
Disclaimer: I'm the author.
Love your work on this, thanks for bringing the ggplot syntax to Python!
Minor nit, the "Installing" link on the linked page leads to the general documentation.