google/protobuf is a key dependency of python grpc.

Shortly, gRPC-based will be published that contain either a top-level 'google' package, and in some cases other modules in the google/protobuf package.

At the moment using, any of these other packages will generally fail because the protobuf package is installed

• the other google package will contain modules with the google package (sometimes in google/protobuf)
• when the protobuf package is installed, both google and google/protobuf end up being resolved to the protobuf package
• other paths on the sys.path are not searched

The result is importing modules from the other packages ends with 'No module named logging.v1' for snippets like:

from google.logging.v1 import ....

There is well-known way to resolve this using pkgutil

• Use pkgutil.extend_path inside the init.py of the google and google/protobuf packages
  E.g,

import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)

A good online resource explaining this use of pkgutil is available at pymotw:pkgutil