Python requests 请求导致 400 错误，而 cURL 请求正常

Question

我使用请求如下：

    headers = {
        'Authorization': f'Bearer {self.__yandex_cloud_manager.get_iam_token().token}',
        'Transfer-Encoding': 'chunked',
    }

    data = {
        'voice': self.voice,
        'emotion': 'neutral',
        'lang': self.language,
        'speed': self.temp,
        'folderId': self.__get_folder_id(),
        'format': 'oggopus',
        'text': text,
    }

    response = requests.post(
            url='https://tts.api.cloud.yandex.net/speech/v1/tts:synthesize',
            headers=headers,
            data=data)

它发送这个数据：

send: b'POST /speech/v1/tts:synthesize HTTP/1.1\r\nHost: tts.api.cloud.yandex.net\r\nUser-Agent: python-requests/2.21.0\r\nAccept-Encoding: gzip, deflate\r\nAccept: */*\r\nConnection: keep-alive\r\nAuthorization: Bearer <removed>\r\nTransfer-Encoding: chunked\r\nContent-Length: 135\r\nContent-Type: application/x-www-form-urlencoded\r\n\r\n'
send: b'voice=alyss&emotion=neutral&lang=ru-RU&speed=1.0&folderId=<removed>&format=oggopus&text=%D0%9F%D1%80%D0%B8%D0%B2%D0%B5%D1%82'

我收到了 400 个响应。

但是当我像这样转储请求时：

            req = response.request

            command = "curl -X {method} -H {headers} -d '{data}' '{uri}'"
            method = req.method
            uri = req.url
            data = req.body
            headers = ['"{0}: {1}"'.format(k, v) for k, v in req.headers.items()]
            headers = " -H ".join(headers)
            print(command.format(method=method, headers=headers, data=data, uri=uri))

它给出了以下命令：

curl -X POST -H "User-Agent: python-requests/2.21.0" -H "Accept-Encoding: gzip, deflate" -H "Accept: */*" -H "Connection: keep-alive" -H "Authorization: Bearer <removed>" -H "Transfer-Encoding: chunked" -H "Content-Length: 135" -H "Content-Type: application/x-www-form-urlencoded" -d 'voice=alyss&emotion=neutral&lang=ru-RU&speed=1.0&folderId=<removed>&format=oggopus&text=%D0%9F%D1%80%D0%B8%D0%B2%D0%B5%D1%82' 'https://tts.api.cloud.yandex.net/speech/v1/tts:synthesize'

并且使用此命令的请求执行成功。

可能是什么问题？

Answer 1

好吧，如果我删除 "Transfer-Encoding: chunked" header。

Python requests 请求导致 400 错误，而 cURL 请求正常

Python requests request leads to 400 error while cURL request is OK

python

http

curl

python-requests

yandex