Python调用微软语音识别

参加某个项目时用到了微软的语音识别，根据官方给的C#版写的，没有什么注释

调用语音识别的封装类

MSspeechAPI_class.py

# -*- coding:utf-8 -*-import certifiimport pycurlimport requestsimport osimport jsonimport uuidfrom StringIO import StringIOdef byteify(input_data):    # convert json to list    if isinstance(input_data, dict):        return {byteify(key): byteify(value) for key, value in input_data.iteritems()}    elif isinstance(input_data, list):        return [byteify(element) for element in input_data]    elif isinstance(input_data, unicode):        return input_data.encode('utf-8')    else:        return input_datadef read_in_chunks(file_object, chunk_size=1024):    # post chunk encoding data    while True:        data = file_object.read(chunk_size)        if not data:            break        yield dataclass Authentication:    # get token    def __init__(self, client_id, client_secret):        self.AccessUrl = "https://oxford-speech.cloudapp.net/token/issueToken"        self._clientId = client_id        # provided by MS        self._clientSecret = client_secret        # provided by MS        self.request_data = 'grant_type=client_credentials&client_id=' + self._clientId+'&client_secret='        self.request_data += self._clientSecret + '&scope=https://speech.platform.bing.com'        # opt must be a string object not a unicode object        data_l = len(self.request_data)        http_header = [                       "Content-Type:application/x-www-form-urlencoded"                       ]        storage = StringIO()        # the way to get response and print it        c = pycurl.Curl()        c.setopt(pycurl.CAINFO, certifi.old_where())        c.setopt(pycurl.URL, self.AccessUrl)        c.setopt(c.HTTPHEADER, http_header)        c.setopt(c.POST, 1)        c.setopt(c.POSTFIELDSIZE, data_l)        c.setopt(c.CONNECTTIMEOUT, 30)        c.setopt(c.TIMEOUT, 30)        c.setopt(c.POSTFIELDS, self.request_data)        # --------------------------------------------        c.setopt(c.WRITEFUNCTION, storage.write)        # --------------------------------------------        c.perform()        c.close()        body = storage.getvalue()        storage.close()        self._token = byteify(json.loads(body.decode()))    def getAccessToken(self):        return self._token["access_token"]class MsSpeechRequest:    def __init__(self, audiofile, audioSamplerate=16000, clientid='', clientsecret='', locale='zh-CN', deviceOS='Rasbian'):        if audiofile == None:            print 'audio input wrong'            return        try:            self._auth = Authentication(clientid, clientsecret)        except Exception as e:            print 'failed get access token.details:%s',e.__str__()        self._RequestUri = "https://speech.platform.bing.com/recognize"        self._RequestUri += "?scenarios=smd"        self._RequestUri += "&appid="        # input appid        self._RequestUri += "&locale="+locale        self._RequestUri += "&device.os="+deviceOS        self._RequestUri += "&version=3.0"        self._RequestUri += "&format=json"        self._RequestUri += "&instanceid="        # input instance id        self._RequestUri += "&requestid="+str(uuid.uuid4())        self._audioFile = audiofile        self._audioSamplerate = audioSamplerate.__str__()        self._token = self._auth.getAccessToken()        # print self._token        self._response = ''    def post_request(self):        headers = {}        headers['Accept'] = 'application/json;text/xml'        headers['Content-Type'] = 'audio/wav; codec=\"audio/pcm\"; samplerate='+self._audioSamplerate        headers['Authorization'] = 'Bearer '+'%s' % self._token        try:            with open(self._audioFile,'rb') as f:                r=requests.post(self._RequestUri, data=read_in_chunks(f), headers=headers, stream=True)                print r                self._response = byteify(r.text)                print self._response        except Exception as e:            print 'failed get request response. Details:%s',e.__str__()    def returnResult(self):        self.post_request()        return self._response

具体调用

# -*- coding:utf-8 -*-from MSspeechAPI_class import MsSpeechRequestdef main():    requset = MsSpeechRequest(audiofile=('output.wav'))    response = requset.returnResult()    print responsemain()