试过python的音频播放各种库都播放不了音乐,比如playsound,pygame等第三方库,内置的winsound也只能发警报声,所以是电脑系统的问题,还是python没有音频播放等处理功能?
python可以播放音乐的,我这里有代码
pygame播放音乐
https://www.pygame.org/docs/ref/music.html
playsound库因为在windows不支持utf-16编码,需要修改源码
用以下代码,替换 playsound.py 即可,文件位置如下:
import logging
logger = logging.getLogger(__name__)
class PlaysoundException(Exception):
pass
def _canonicalizePath(path):
"""
Support passing in a pathlib.Path-like object by converting to str.
"""
import sys
if sys.version_info[0] >= 3:
return str(path)
else:
# On earlier Python versions, str is a byte string, so attempting to
# convert a unicode string to str will fail. Leave it alone in this case.
return path
def _playsoundWin(sound, block = True):
'''
Utilizes windll.winmm. Tested and known to work with MP3 and WAVE on
Windows 7 with Python 2.7. Probably works with more file formats.
Probably works on Windows XP thru Windows 10. Probably works with all
versions of Python.
Inspired by (but not copied from) Michael Gundlach <gundlach@gmail.com>'s mp3play:
https://github.com/michaelgundlach/mp3play
I never would have tried using windll.winmm without seeing his code.
'''
sound = _canonicalizePath(sound)
if any((c in sound for c in ' "\'()')):
from os import close, remove
from os.path import splitext
from shutil import copy
from tempfile import mkstemp
fd, tempPath = mkstemp(prefix = 'PS', suffix = splitext(sound)[1]) # Avoid generating files longer than 8.3 characters.
logger.info('Made a temporary copy of {} at {} - use other filenames with only safe characters to avoid this.'.format(sound, tempPath))
copy(sound, tempPath)
close(fd) # mkstemp opens the file, but it must be closed before MCI can open it.
try:
_playsoundWin(tempPath, block)
finally:
remove(tempPath)
return
from ctypes import c_buffer, windll
from time import sleep
def winCommand(*command):
bufLen = 600
buf = c_buffer(bufLen)
command = ' '.join(command)
errorCode = int(windll.winmm.mciSendStringW(command, buf, bufLen - 1, 0)) # use widestring version of the function
if errorCode:
errorBuffer = c_buffer(bufLen)
windll.winmm.mciGetErrorStringW(errorCode, errorBuffer, bufLen - 1) # use widestring version of the function
exceptionMessage = ('\n Error ' + str(errorCode) + ' for command:'
'\n ' + command +
'\n ' + errorBuffer.raw.decode('utf-16').rstrip('\0'))
logger.error(exceptionMessage)
raise PlaysoundException(exceptionMessage)
return buf.value
if '\\' in sound:
sound = '"' + sound + '"'
try:
logger.debug('Starting')
winCommand(u'open {}'.format(sound))
winCommand(u'play {}{}'.format(sound, ' wait' if block else ''))
logger.debug('Returning')
finally:
try:
winCommand(u'close {}'.format(sound))
except PlaysoundException:
logger.warning(u'Failed to close the file: {}'.format(sound))
# If it fails, there's nothing more that can be done...
pass
def _handlePathOSX(sound):
sound = _canonicalizePath(sound)
if '://' not in sound:
if not sound.startswith('/'):
from os import getcwd
sound = getcwd() + '/' + sound
sound = 'file://' + sound
try:
# Don't double-encode it.
sound.encode('ascii')
return sound.replace(' ', '%20')
except UnicodeEncodeError:
try:
from urllib.parse import quote # Try the Python 3 import first...
except ImportError:
from urllib import quote # Try using the Python 2 import before giving up entirely...
parts = sound.split('://', 1)
return parts[0] + '://' + quote(parts[1].encode('utf-8')).replace(' ', '%20')
def _playsoundOSX(sound, block = True):
'''
Utilizes AppKit.NSSound. Tested and known to work with MP3 and WAVE on
OS X 10.11 with Python 2.7. Probably works with anything QuickTime supports.
Probably works on OS X 10.5 and newer. Probably works with all versions of
Python.
Inspired by (but not copied from) Aaron's Stack Overflow answer here:
http://stackoverflow.com/a/34568298/901641
I never would have tried using AppKit.NSSound without seeing his code.
'''
try:
from AppKit import NSSound
except ImportError:
logger.warning("playsound could not find a copy of AppKit - falling back to using macOS's system copy.")
sys.path.append('/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC')
from AppKit import NSSound
from Foundation import NSURL
from time import sleep
sound = _handlePathOSX(sound)
url = NSURL.URLWithString_(sound)
if not url:
raise PlaysoundException('Cannot find a sound with filename: ' + sound)
for i in range(5):
nssound = NSSound.alloc().initWithContentsOfURL_byReference_(url, True)
if nssound:
break
else:
logger.debug('Failed to load sound, although url was good... ' + sound)
else:
raise PlaysoundException('Could not load sound with filename, although URL was good... ' + sound)
nssound.play()
if block:
sleep(nssound.duration())
def _playsoundNix(sound, block = True):
"""Play a sound using GStreamer.
Inspired by this:
https://gstreamer.freedesktop.org/documentation/tutorials/playback/playbin-usage.html
"""
sound = _canonicalizePath(sound)
# pathname2url escapes non-URL-safe characters
from os.path import abspath, exists
try:
from urllib.request import pathname2url
except ImportError:
# python 2
from urllib import pathname2url
import gi
gi.require_version('Gst', '1.0')
from gi.repository import Gst
Gst.init(None)
playbin = Gst.ElementFactory.make('playbin', 'playbin')
if sound.startswith(('http://', 'https://')):
playbin.props.uri = sound
else:
path = abspath(sound)
if not exists(path):
raise PlaysoundException(u'File not found: {}'.format(path))
playbin.props.uri = 'file://' + pathname2url(path)
set_result = playbin.set_state(Gst.State.PLAYING)
if set_result != Gst.StateChangeReturn.ASYNC:
raise PlaysoundException(
"playbin.set_state returned " + repr(set_result))
# FIXME: use some other bus method than poll() with block=False
# https://lazka.github.io/pgi-docs/#Gst-1.0/classes/Bus.html
logger.debug('Starting play')
if block:
bus = playbin.get_bus()
try:
bus.poll(Gst.MessageType.EOS, Gst.CLOCK_TIME_NONE)
finally:
playbin.set_state(Gst.State.NULL)
logger.debug('Finishing play')
def _playsoundAnotherPython(otherPython, sound, block = True, macOS = False):
'''
Mostly written so that when this is run on python3 on macOS, it can invoke
python2 on macOS... but maybe this idea could be useful on linux, too.
'''
from inspect import getsourcefile
from os.path import abspath, exists
from subprocess import check_call
from threading import Thread
sound = _canonicalizePath(sound)
class PropogatingThread(Thread):
def run(self):
self.exc = None
try:
self.ret = self._target(*self._args, **self._kwargs)
except BaseException as e:
self.exc = e
def join(self, timeout = None):
super().join(timeout)
if self.exc:
raise self.exc
return self.ret
# Check if the file exists...
if not exists(abspath(sound)):
raise PlaysoundException('Cannot find a sound with filename: ' + sound)
playsoundPath = abspath(getsourcefile(lambda: 0))
t = PropogatingThread(target = lambda: check_call([otherPython, playsoundPath, _handlePathOSX(sound) if macOS else sound]))
t.start()
if block:
t.join()
from platform import system
system = system()
if system == 'Windows':
playsound = _playsoundWin
elif system == 'Darwin':
playsound = _playsoundOSX
import sys
if sys.version_info[0] > 2:
try:
from AppKit import NSSound
except ImportError:
logger.warning("playsound is relying on a python 2 subprocess. Please use `pip3 install PyObjC` if you want playsound to run more efficiently.")
playsound = lambda sound, block = True: _playsoundAnotherPython('/System/Library/Frameworks/Python.framework/Versions/2.7/bin/python', sound, block, macOS = True)
else:
playsound = _playsoundNix
if __name__ != '__main__': # Ensure we don't infinitely recurse trying to get another python instance.
try:
import gi
gi.require_version('Gst', '1.0')
from gi.repository import Gst
except:
logger.warning("playsound is relying on another python subprocess. Please use `pip install pygobject` if you want playsound to run more efficiently.")
playsound = lambda sound, block = True: _playsoundAnotherPython('/usr/bin/python3', sound, block, macOS = False)
del system
if __name__ == '__main__':
# block is always True if you choose to run this from the command line.
from sys import argv
playsound(argv[1])
替换后,即能播放了。实测有效!!!
from playsound import playsound
playsound('demo.mp3')
pygame可以播放音乐,初学者需要注意,使用pygame库的时候必须要先初始化。
import pygame
from pygame import mixer
mixer.init()
mixer.music.load("....mp3/wav/ogg")
mixer.music.play(-1) #play可以提供一个参数表示播放次数,-1是循环播放