list_devices_fxn.py

import pyaudio as pya

def list_devices():
    '''
    Lists all audio input devices in the format:
    
    Device Index. Device Name
    '''
    
    # List all audio input devices
    p = pya.PyAudio()
    i = 0
    n = p.get_device_count()
    while i < n:
        dev = p.get_device_info_by_index(i)
        if dev['maxInputChannels'] > 0:
           print(str(i)+'. '+dev['name'])
        i += 1