How can i make the python to wait till i complete

问题:

I am writing a program to recognise the speech from a microphone and the code will process accordingly. The code I wrote for this purpose is below.

import speech_recognition as sr
import webbrowser
import pyttsx
from time import sleep

engine = pyttsx.init()
engine.setProperty('rate', 70)
r = sr.Recognizer()

def recognize(audio):
    try:
        return r.recognize(audio)
    except LookupError, e:
        print e
    return ''
with sr.Microphone() as source:
    while True:
        engine.say("Hi How can i help you ?")
        sleep(0.15)
        print "Start Speaking"
        audio = r.listen(source)
        words = recognize(audio)
        print("You said " + words)
        if words == "Facebook":
            engine.say("Shall i open the Facebook page for you ?")
            engine.runAndWait()
            audio = r.listen(source)
            words = recognize(audio)
            if words == "Yes":
                webbrowser.open('https://www.facebook.com')
        elif words == "stop":
            break

Here I tried sleep also but before the engine speaks I can see the text Start Speaking getting printed. Instead of Sleep, is there any nice way to capture the speech in microphone and wait till say something or for a long silence?

回答1:

This method:

        engine.runAndWait()

waits for speech to complete. You need to use it not just after engine.say("Shall i open the Facebook page for you ?"), but also after engine.say("Hi How can i help you ?") instead of sleep