For future reference, cx_Freeze ships its own copy of ModuleFinder, so it doesn't depend on the stdlib copy. This issue was fixed there some time around the release of Python 3.3.

I realised recently that this is based on code in the stdlib, and I've been meaning to work out whether cx_Freeze can use any of the stdlib code and lose parts of its own implementation. I guess it's been diverging for quite some time, though.