如何在python线程中使用pyttsx

Question

我正在与pyttsx3合作进行文本到语音。我意识到我可以在线程中使用它（或者做错了什么）。你知道为什么吗？

代码示例：

from threading import Thread
import pyttsx3
def myfunc():
  engine = pyttsx3.init()
  engine.say("ok")
  engine.runAndWait()
t = Thread(target=myfunc)
t.start()

错误：

 File "/usr/local/Cellar/python3/3.6.4/Frameworks/Python.framework/Versions/3.6/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/usr/local/Cellar/python3/3.6.4/Frameworks/Python.framework/Versions/3.6/lib/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "test.py", line 9, in myfunc
    engine.runAndWait() #blocks
  File "/usr/local/lib/python3.6/site-packages/pyttsx3/engine.py", line 188, in runAndWait
    self.proxy.runAndWait()
  File "/usr/local/lib/python3.6/site-packages/pyttsx3/driver.py", line 204, in runAndWait
    self._driver.startLoop()
  File "/usr/local/lib/python3.6/site-packages/pyttsx3/drivers/nsss.py", line 33, in startLoop
    AppHelper.runConsoleEventLoop()
  File "/usr/local/lib/python3.6/site-packages/PyObjCTools/AppHelper.py", line 241, in runConsoleEventLoop
    nextfire = nextfire.earlierDate_(soon)
AttributeError: 'NoneType' object has no attribute 'earlierDate_'

Answer 1

错误似乎是在OSX上的线程中不运行。以下是一些可能效果很好的示例：

如果您只需要将文本转换为语音，则可以使用os.system('say %s')：

import os
def myfunc():
  os.system('say ok')

GTTS或Google的TextTospeech引擎，支持64种语言，包括意大利语。用法：

from gtts import gTTS
import os
tts = gTTS(text='Good morning', lang='it')
tts.save("good.mp3")
os.system("mpg321 good.mp3")

Answer 2

我认为pyttsx3不能在多个线程中发出声音（只能发出一次声音可以）。如果要在多个线程中发出声音，MACOS系统应使用Say命令。

其他操作系统也应具有相应的命令

import sys
import os
import threading
print('threading1:',threading.activeCount())
text = 'Please start'
def myfunc():
    while True:
        # os.system('say another')
        # os.system('say -v Daniel "another"')
        # os.system('say -v Daniel "[[rate 160]] another"')  # 速度默认200
        os.system('say -v Daniel -r 140 "{}"'.format(text))
        os.system('say -v Samantha -r 140 "{}"'.format(text))
        # print(111)
loopThread = threading.Thread(target=myfunc, name='backgroundMusicThread')
loopThread.daemon = True
loopThread.start()
print('threading2:',threading.activeCount())
while True:
    text = input('input:n')
    if text == 'end':
        sys.exit()