Watson文本到语音API。在其中一个API文件中获取无效的语法

Question

我正在使用Python 2.7.15，并且收到有关其中一个API文件的消息。 关于发生了什么的任何想法。

Traceback (most recent call last):
  File "text_to_speech_v1.py", line 4, in <module>
    from ibm_watson import TextToSpeechV1
  File "/usr/local/lib/python2.7/dist-packages/ibm_watson/__init__.py", line 16, in <module>
    from ibm_cloud_sdk_core import IAMTokenManager, DetailedResponse, BaseService, ApiException
  File "/usr/local/lib/python2.7/dist-packages/ibm_cloud_sdk_core/__init__.py", line 16, in <module>
    from .base_service import BaseService
  File "/usr/local/lib/python2.7/dist-packages/ibm_cloud_sdk_core/base_service.py", line 136
    response = requests.request(**request, cookies=self.jar, **kwargs)

SyntaxError: invalid syntax