Update 2015: possible as of Go 1.5 https://blog.filippo.io/building-python-modules-with-go-1-5/
with Go 1.5 you can build .so objects and import them as Python modules, running Go code (instead of C) directly from Python.
See also https://github.com/go-python/gopy
gopy generates a CPython extension module from a go package.