Playing / Recording / Processing live sounds to/from Numpy arrays in Python

PyQt5 / PortAudio / PulseAudio cross-platform audio in Python example

PyQt5 example of Python cross-platform sound–audio ring buffer and live spectrum visualization

live Python ring-buffer spectrum display
PyQt5 and vispy provide an elegant cross-platform live visual interface for Python.

Pygame, PyAudio, Scikits.Audiolab Python cross-platform sound playback examples

Example PyGame / PyAudio code for playing sounds from Numpy arrays in Python

Pygame (recommended) and PyAudio are for Python 2/3 while Scikits.Audiolab is no longer maintained and Python 2 only.