"The Python Robot" is going mad ?

[Robert]

I have python related stuff on some of my web pages.

This month  "The Python Robot" is going for over 400 MB / 4000 accesses
downloads in my stats ! increasing frequency the last months!? thats 25x
more than Google Bot & Inktomi Slurp - the second loquacious.

These numbers a going to cause substantial server cost. Why does "The Python
Robot" need to scan my pages 20 times a day? How can I cool down this
special bot a little bit ( robots.txt ? )

Robert