pygame-midi

midi.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import sys
import pygame
import pygame.midi

MIDI_DEVICE_NAME_MATCH = "nanoPAD"

# set up pygame
pygame.init()
pygame.midi.init()


# list all midi devices
device_idx = False
for x in range( 0, pygame.midi.get_count() ):
    interf, name, is_in, is_out, is_open = pygame.midi.get_device_info(x)
    if is_in:
        match = str(name).lower().find(MIDI_DEVICE_NAME_MATCH.lower())
        if match>-1:
            device_idx = x

if not device_idx:
    print("Device not found")
    sys.exit(1)



# open a specific midi device
inp = pygame.midi.Input(device_idx)

# run the event loop
while True:
    if inp.poll():
        data = inp.read(1000)
        data = data[0][0]
        key_id = data[1]
        key_val = data[2]
        state = True if data[0] == 144 else False
        state_human = "on" if state else "off"

        base_pct = key_val - 64
        pct = round(base_pct / 0.63 )

        print("key={0} data={1} state={2} base={3}, pct={4}".format(
            key_id,
            key_val,
            state_human,
            base_pct,
            pct
        ))

    pygame.time.wait(10)