pygameでmidiを操作する

midi.py

import time

import pygame
import pygame.midi


def main(args):
    pygame.midi.init()

    if args.list:
        print("# of devices:", pygame.midi.get_count())
        for i in range(pygame.midi.get_count()):
            print("DeviceID: ", i, "Info=", pygame.midi.get_device_info(i))
    else:
        try:
            out = pygame.midi.Output(args.device)
            out.set_instrument(0)

            out.note_on(60, 127)
            time.sleep(1)
            out.note_off(60, 0)

            out.note_on(62, 127)
            time.sleep(1)
            out.note_off(62, 0)

            out.note_on(64, 127)
            time.sleep(1)
            out.note_off(64, 0)

            out.close()
        except pygame.midi.MidiException:
            print("Invalid device number:", args.device)

    pygame.midi.quit()


def get_parser():
    import argparse
    parser = argparse.ArgumentParser()
    parser.add_argument("--list", action="store_true", default=False)
    parser.add_argument("--device", type=int, default=0)
    return parser


if __name__ == '__main__':
    main(get_parser().parse_args())