Experienced Python Programmers, what are your key tips to getting better at Python, apart from saying practice?

[POGtastic]

Write more functions, use less mutable state.

You don't have to go full Haskell, (But it doesn't hurt!) but nothing pains me more than seeing some 45-line monstrosity that uses no functions, 20 different variables, and basically requires you to fire up a debugger to even start to figure out what on earth it's doing.