Guido van Rossum, creator of Python, recently showed up for a Py4science meeting in the San Francisco Bay Area (video, slides). There are several accounts of the discussion by attendees: Guido himself; Matthew Brett, of Neuroimaging in Python (NiPy); Jarrod Millman, of NumPy, NiPy, and SciPy; and Fernando Perez, of IPython. It looks like people are starting to see the benefits of porting to Python 3.