A list of nice resources to learn Python!
To get you acquainted with the language and let you try it out without having to actually install anything on your machine.
PythonMonk
Codecademy Python Track
Check iO
Once you've gotten the hang of Python a little and want to practice Coding Bat
Fun stuff that doesn't really fit anywhere else..
Python Tutor - lets you visualize and execute your code line by line. Great for debugging and to see how small programs work.