为什么我会收到 raise UnknownValueError() speech_recognition.UnknownValueError？答案

【问题标题】：Why am I getting raise UnknownValueError() speech_recognition.UnknownValueError?为什么我会收到 raise UnknownValueError() speech_recognition.UnknownValueError？
【发布时间】：2022-01-10 08:02:49
【问题描述】：

我正在尝试编写一个脚本，该脚本使用 SpeechRecognition 来运行一个函数，一旦说出一个唤醒词“运行”就可以正常运行，直到我进行正则表达式搜索以在我的 alpha 变量中找到唤醒词这是分配给我所说的。运行时出现错误。我已经用一个字符串在 SpeechRecognition 之外测试了我的正则表达式算法，它运行良好。

错误：

raise UnknownValueError()
speech_recognition.UnknownValueError

我能得到一些帮助吗？

代码：

import speech_recognition as sr
import re

def stt():
    recognizer = sr.Recognizer()
    microphone = sr.Microphone()

    # check that recognizer and microphone arguments are appropriate type
    if not isinstance(recognizer, sr.Recognizer):
        raise TypeError("`recognizer` must be `Recognizer` instance")

    if not isinstance(microphone, sr.Microphone):
        raise TypeError("`microphone` must be `Microphone` instance")

    # listen and assign
    with microphone as source:
        recognizer.adjust_for_ambient_noise(source)
        audio = recognizer.listen(source)
    # return output
    return recognizer.recognize_google(audio)


while True:
    alpha = stt()
    print(alpha)
    if re.search('.+Run.+', alpha):
        print("1")
        beta = alpha.split()
        query = beta.pop()
        print("working")

【问题讨论】：

标签： python regex speech-recognition

【解决方案1】：

尝试将您的整个代码置于 try 和 except 之下。

像这样：

import speech_recognition as sr
import re

try:

    def stt():
        recognizer = sr.Recognizer()
        microphone = sr.Microphone()

        # check that recognizer and microphone arguments are appropriate type
        if not isinstance(recognizer, sr.Recognizer):
            raise TypeError("`recognizer` must be `Recognizer` instance")

        if not isinstance(microphone, sr.Microphone):
            raise TypeError("`microphone` must be `Microphone` instance")

        # listen and assign
        with microphone as source:
            recognizer.adjust_for_ambient_noise(source)
            audio = recognizer.listen(source)
        # return output
        return recognizer.recognize_google(audio)


    while True:
        alpha = stt()
        print(alpha)
        if re.search('.+Run.+', alpha):
            print("1")
            beta = alpha.split()
            query = beta.pop()
            print("working")
    
except sr.UnknownValueError() as e:
    pass

如果这不起作用。看看这个github issue

【讨论】：