> I don't know that this makes sense for anyone but Google
I'm not sure; as a Go developer, I kind of like the idea of having access to the Python library ecosystem from Go, without being forced to create an IPC bridge and building up the requisite release-management and deploy-time goop.
Plus, I'm just not a Python developer; in the case where the only library that exists to do something is written in Python, I'd much rather write Go that calls that Python library than Python that calls that Python library.