Python equivalent of spatstat's spatial point process functions

Is there a free Python package (i.e. PySAL?) that implements the standard summary statistics for spatial point processes, e.g. the F, G, J, and K functions?

I’m happy to use R (i.e. spatstat) if that’s the best option, but I want to try out some other things I already have implemented in python. The implementations don’t have to be nearly as exhaustive as R, just looking for something to get started.