Ubuntu package "python3" does not include tkinter

[lcrocker]

Thanks, but I'm not having any trouble running tkinter, it works just
fine. I have an issue with the fact that it's optional. It reflects
badly on the language and community if we allow just anyone to call
something "Python" that doesn't meet some minimum standard of quality.
Java has its compliance tests: if your implementation doesn't pass,
you can't call it "Java". I'm asking if there's something similar for
Python, because Ubuntu's Python 3 doesn't pass the test.