如何使用pygame依次运行声音循环？

一种简单的方法是使用pygame.mixer.Channel()函数set_endevent()。

channel2 = pygame.mixer.Channel(1)
channel2.set_endevent( pygame.USEREVENT+1 )

pygame.USEREVENT+1当声音停止播放时，这将发送事件队列到您指定的任何事件（在此处）。

我做了一个简短的演示示例。它会发出很长的背景声音，然后连续发出随机的短声。当pygame.USEREVENT+1收到事件时，一个新的声音将立即开始。

import pygame
import random

# Window size
WINDOW_WIDTH    = 400
WINDOW_HEIGHT   = 400
WINDOW_SURFACE  = pygame.HWSURFACE|pygame.DOUBLEBUF|pygame.RESIZABLE

DARK_BLUE = (   3,   5,  54)

### initialisation
pygame.init()
pygame.mixer.init()
window = pygame.display.set_mode( ( WINDOW_WIDTH, WINDOW_HEIGHT ), WINDOW_SURFACE )
pygame.display.set_caption("Random Sound")

### sound
# create separate Channel objects for simultaneous playback
channel1 = pygame.mixer.Channel(0) # argument must be int
channel2 = pygame.mixer.Channel(1)

# define the event that's sent when a sound stops playing:
channel2.set_endevent( pygame.USEREVENT+1 )

# Rain sound from: https://www.freesoundslibrary.com/sound-of-rain-falling-mp3/ (CC BY 4.0)
rain_sound = pygame.mixer.Sound( 'rain-falling.ogg' )
channel1.play( rain_sound, -1 )   # loop the rain sound forever
# and ...  All are (CC BY 4.0)
# https://www.freesoundslibrary.com/car-horn-sound-effect/
# https://www.freesoundslibrary.com/duck-quack/ 
# https://www.freesoundslibrary.com/cash-register-sound-effect/
# https://www.freesoundslibrary.com/turkey-gobble-call/
# https://www.freesoundslibrary.com/single-ding-sound-effect/
# https://www.freesoundslibrary.com/dog-bark-sound-effect/
# 
horn     = pygame.mixer.Sound( 'car-horn2.ogg' )      # converted from MP3 to OGG
quack    = pygame.mixer.Sound( 'duck-quack.ogg' )
ca_ching = pygame.mixer.Sound( 'cash-register.ogg' )
bark     = pygame.mixer.Sound( 'dog-bark.ogg' )
ding     = pygame.mixer.Sound( 'single-ding.ogg' )
gobble   = pygame.mixer.Sound( 'turkey-gobble.ogg' )

# Sound list
all_sounds = [ horn, quack, ca_ching, bark, ding, gobble ]
# Start with a random sound
channel2.play( random.choice( all_sounds ) )

### Main Loop
clock = pygame.time.Clock()
done = False
while not done:

    # Handle user-input
    for event in pygame.event.get():
        if ( event.type == pygame.QUIT ):
            done = True
        elif ( event.type == pygame.USEREVENT+1 ):
            # Channel2 sound ended, start another!
            channel2.play( random.choice( all_sounds ) )
            print( "Sound ended" )

    # Update the window, but not more than 60fps
    window.fill( DARK_BLUE )
    pygame.display.flip()

    # Clamp FPS
    clock.tick_busy_loop(60)

pygame.quit()

freesoundslibrary.com上的许多声音都很长（例如：多次鸭叫声）。我使用工具Audacity将它们剪切为短声，在每一侧都留下了瞬间的安静。

编辑：要将其更改为预定列表，只需保留一个记录，即current_sound。

# Sound list
all_sounds = [ horn, quack, ca_ching, bark, ding, gobble ]
# Start with the first sound
channel2.play( all_sounds[ 0 ] )
current_sound_index = 0

...

    for event in pygame.event.get():
        if ( event.type == pygame.QUIT ):
            done = True
        elif ( event.type == pygame.USEREVENT+1 ):
            # Channel2 sound ended, start the next sound!
            current_sound_index += 1
            if ( current_sound_index < len( all_sounds ) ):
                channel2.play( all_sounds[ current_sound_index ] )
                print( "Sound ended" )
            else:
                print( "Played all sounds" )