python怎么输出声音_用python录制输出声音

我想用python编程录制从笔记本电脑发出的声音。我找到了PyAudio，并提出了以下完成任务的程序：import pyaudio, wave, sys

chunk = 1024

FORMAT = pyaudio.paInt16

CHANNELS = 1

RATE = 44100

RECORD_SECONDS = 5

WAVE_OUTPUT_FILENAME = sys.argv[1]

p = pyaudio.PyAudio()

channel_map = (0, 1)

stream_info = pyaudio.PaMacCoreStreamInfo(

flags = pyaudio.PaMacCoreStreamInfo.paMacCorePlayNice,

channel_map = channel_map)

stream = p.open(format = FORMAT,

rate = RATE,

input = True,

input_host_api_specific_stream_info = stream_info,

channels = CHANNELS)

all = []

for i in range(0, RATE / chunk * RECORD_SECONDS):

data = stream.read(chunk)

all.append(data)

stream.close()

p.terminate()

data = ''.join(all)

wf = wave.open(WAVE_OUTPUT_FILENAME, 'wb')

wf.setnchannels(CHANNELS)

wf.setsampwidth(p.get_sample_size(FORMAT))

wf.setframerate(RATE)

wf.writeframes(data)

wf.close()

问题是我得把耳机插孔和麦克风插孔连接起来。我试着换掉这几行：input = True,

input_host_api_specific_stream_info = stream_info,

有了这些：output = True,

output_host_api_specific_stream_info = stream_info,

但后来我发现这个错误：Traceback (most recent call last):

File "./test.py", line 25, in

data = stream.read(chunk)

File "/Library/Python/2.5/site-packages/pyaudio.py", line 562, in read

paCanNotReadFromAnOutputOnlyStream)

IOError: [Errno Not input stream] -9975

有没有一种方法可以实例化PyAudio流，使其从计算机的输出输入，而我不必将耳机插孔连接到麦克风？有更好的办法吗？我更喜欢使用python应用程序，避免使用cocoa。