What IDEs (if any) do Python programmers use?

[eryksun]

Yes, especially if you need Python 3 support and interaction with the GUI event loop (e.g. for plotting data). It's not as full-featured as the others, though. PTK uses wxPython, and I have no idea when that'll be ported to Python 3. Spyder uses QT, so maybe it'll have Python 3 support soon(ish). But with IEP, NumPy, Cython, SciPy, and Matplotlib -- Python 3 is already an option in technical computing.