Update that.py

I realize that I urgently need to appear to be a much more
prolific contributor to Python than before. After all, everyone
knows now that I am unfit to speak at conferences and a complete
misogynist. Therefore my sole remaining chance to get rich is to
put my financial future in the hands of those who have become
modestly wealthy and are prepared to send money to people on the
basis of some metric that appears to imply they are doing good
for open source. Something like "lines of code" for example.

This change allows people who haven't even come across Python 3 to hate you, as long as they have Python 2.6 or later.

Of course I haven't tested it. I wouldn't dream of installing
this code. If it doesn't work, sue me.