pygame.midi CPU使用率高

Question

While using pygame.midi, Python consumes 20-25% of my CPU.

I guess it's because of the "While" loop which waits for MIDI input...

Any ideas? I'd appreciate any advice you might have...

Here is the loop:

    going = True
    while going:
        events = event_get()
        for e in events:
            if e.type in [pg.QUIT]:
                going = False
            if e.type in [pg.KEYDOWN]:
                going = False
            if e.type in [pygame.midi.MIDIIN]:
                if e.data2 == 127:
                    shortcuts(e.data1)

        if i.poll():
            midi_events = i.read(10)
            # convert them into pygame events.
            midi_evs = pygame.midi.midis2events(midi_events, i.device_id)

            for m_e in midi_evs:
                event_post(m_e)

Answer 1

You can limit the CPU usage with pygame.time.Clock.tick :

clock = pygame.time.Clock()
going = True
while going:
    clock.tick(60)

    # [...]

The method tick() of a pygame.time.Clock object, delays the game in that way, that every iteration of the loop consumes the same period of time.