python 文件写入未创建新文件

Question

我有一个 django 应用程序，我从 javascript 客户端收到二进制音频数据，我正在尝试将其发送到谷歌云语音到文本 API。 问题是，python 没有将二进制音频数据写入文件。 所以我得到

with io.open(file_name, "rb") as f:
FileNotFoundError: [Errno 2] No such file or directory: '.........\\gcp_cloud\\blog\\audio_file.wav'

我将路径的第一部分替换为............

这是客户端代码

        rec.ondataavailable = e => {
          audioChunks.push(e.data);
          if (rec.state == "inactive"){
            let blob = new Blob(audioChunks,{type:'audio/wav; codecs=MS_PCM'});
            recordedAudio.src = URL.createObjectURL(blob);
            recordedAudio.controls=true;
            recordedAudio.autoplay=true;
            sendData(blob)
          }
        }

这是我的 sendData function

function sendData(data) {
    let csrftoken = getCookie('csrftoken');
    let response=fetch("/voice_request", {
    method: "post",
    body: data,
    headers: { "X-CSRFToken": csrftoken },
    })

    console.log('got a response from the server')
    console.log(response)
}

这是处理来自客户端的二进制音频数据的 DJango 视图

def voice_request(request):
    #print(request.body)
    fw = open('audio_file.wav', 'wb')
    fw.write(request.body)
    file_name = os.path.join(current_folder, 'audio_file.wav')
    #file_name = os.path.join(current_folder, 'Recording.m4a')
    client = speech.SpeechClient()

    # The language of the supplied audio
    language_code = "en-US"

    # Sample rate in Hertz of the audio data sent
    sample_rate_hertz = 16000

    encoding = enums.RecognitionConfig.AudioEncoding.LINEAR16
    config = {
        "language_code": language_code,
        #"sample_rate_hertz": sample_rate_hertz,
        #"encoding": 'm4a',
    }
    with io.open(file_name, "rb") as f:
        content = f.read()

    audio = {"content": content}

    fw.close()

    response = client.recognize(config, audio)

    print('response')
    print(response)
    for result in response.results:
        # First alternative is the most probable result
        alternative = result.alternatives[0]
        print(u"Transcript: {}".format(alternative.transcript))

    return HttpResponse(response)

Answer 1

您应该使用with io.open(file_name, "wb") as f:或使用w with io.open(file_name, "ab") as f:因为r

你可以参考： https://docs.python.org/3.7/library/functions.html?highlight=open#open