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我在 pyqt 中为我的聊天机器人制作 Gui，但我在这方面的代码中有一点问题。

def __init__(self):
    super(Window, self).__init__()
    self.setGeometry(50, 50, 500, 300)
    self.setWindowTitle("Chatbot 0.3")


def offline_speak(chat_speech):
    engine = pyttsx.init()
    engine.say(chat_speech)
    engine.runAndWait()

很少有事情会像def offline_speak(self)那样改变，然后在上面的init中提到它，比如self.offline_speak()但我不知道引擎代码。

谁能建议我什么？

4

1 回答 1

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不需要创建offline_speak()类的方法，但是这个任务可能非常耗时，因此它会阻塞 Qt 生成的主循环，因此建议在第二个线程中执行它，正如我QRunnable在QThreadPool

import pyttsx

from PyQt4.QtGui import *
from PyQt4.QtCore import *


class SpeechRunnable(QRunnable):
    def __init__(self):
        QRunnable.__init__(self)
    def run(self):
        self.engine = pyttsx.init()
        self.engine.say(self.chat_speech)
        self.engine.runAndWait()

    def say(self, text):
        self.chat_speech = text
        QThreadPool.globalInstance().start(self)

    def stop(self):
        self.engine.stop()


class Window(QWidget):
    def __init__(self):
        super(Window, self).__init__()
        self.runnable = None
        self.setWindowTitle("Chatbot 0.3")
        lay = QVBoxLayout(self)
        self.le = QLineEdit(text, self)
        self.btnStart = QPushButton("start", self)
        self.btnStop = QPushButton("stop", self)
        self.btnStart.clicked.connect(self.onClickedStart)
        lay.addWidget(self.le)
        lay.addWidget(self.btnStart)
        lay.addWidget(self.btnStop)


    def onClickedStart(self):
        self.runnable = SpeechRunnable()
        self.runnable.say(self.le.text())
        self.btnStop.clicked.connect(self.runnable.stop)

    def closeEvent(self, event):
        if self.runnable is not None:
            self.runnable.stop()
            QThread.msleep(100) #delay
        super(Window, self).closeEvent(event)
text = """

What is Lorem Ipsum?
Lorem Ipsum is simply dummy text of the printing and typesetting industry. 
Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, 
when an unknown printer took a galley of type and scrambled it to make a type specimen book. 
It has survived not only five centuries, but also the leap into electronic typesetting, 
remaining essentially unchanged. 
It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, 
and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
"""


if __name__ == "__main__":
    import sys

    app = QApplication(sys.argv)
    w = Window()
    w.show()
    sys.exit(app.exec_())
于 2017-11-21T14:34:00.817 回答