OAuth2client属性错误导致YouTube上传认证服务获取失败

按照YouTube官方指南编写代码上传视频，三周前首次运行正常，通过浏览器完成OAuth2登录；如今凭证过期，无法重新上传。

相关代码片段：

def get_authenticated_service():
  flow = flow_from_clientsecrets(CLIENT_SECRETS_FILE,
    scope=YOUTUBE_UPLOAD_SCOPE,
    message=MISSING_CLIENT_SECRETS_MESSAGE)

  storage = Storage("%s-oauth2.json" % sys.argv[0])
  credentials = storage.get()

  if credentials is None or credentials.invalid:
    credentials = run_flow(flow, storage, [])

  return build(YOUTUBE_API_SERVICE_NAME, YOUTUBE_API_VERSION,
    http=credentials.authorize(httplib2.Http()))

遇到的错误：

/usr/local/lib/python3.11/site-packages/oauth2client/_helpers.py:255: UserWarning: Cannot access upload_youtube.py-oauth2.json: No such file or directory
  warnings.warn(_MISSING_FILE_MESSAGE.format(filename))
Traceback (most recent call last):
  File "~/upload_youtube.py", line 291, in <module>
    youtube = get_authenticated_service()
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "~/upload_youtube.py", line 92, in get_authenticated_service
    credentials = run_flow(flow, storage, [])
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/oauth2client/_helpers.py", line 133, in positional_wrapper
    return wrapped(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/oauth2client/tools.py", line 195, in run_flow
    logging.getLogger().setLevel(getattr(logging, flags.logging_level))
                                                  ^^^^^^^^^^^^^^^^^^^
AttributeError: 'list' object has no attribute 'logging_level'

已卸载重装google-api-python-client和oauth2client，问题仍存在。

说明：upload_youtube.py-oauth2.json是认证缓存文件，有效期1-2周，文件缺失时会出现警告（首次运行或删除文件时）。

错误核心是run_flow函数的第三个参数传入了空列表[]，但该函数需要的是包含logging_level属性的命令行参数对象，而非列表。修改方式如下：

方法一：使用官方命令行参数解析 #

1. 确保导入oauth2client.tools的argparser
2. 将run_flow的第三个参数替换为解析后的命令行参数

修改后的代码：

from oauth2client import tools

def get_authenticated_service():
  flow = flow_from_clientsecrets(CLIENT_SECRETS_FILE,
    scope=YOUTUBE_UPLOAD_SCOPE,
    message=MISSING_CLIENT_SECRETS_MESSAGE)

  storage = Storage("%s-oauth2.json" % sys.argv[0])
  credentials = storage.get()

  if credentials is None or credentials.invalid:
    # 解析命令行参数，替代原有的空列表
    flags = tools.argparser.parse_args()
    credentials = run_flow(flow, storage, flags)

  return build(YOUTUBE_API_SERVICE_NAME, YOUTUBE_API_VERSION,
    http=credentials.authorize(httplib2.Http()))

方法二：手动构造参数对象（无需命令行参数） #

如果不需要处理命令行参数，可以手动构造一个包含logging_level属性的对象：

def get_authenticated_service():
  flow = flow_from_clientsecrets(CLIENT_SECRETS_FILE,
    scope=YOUTUBE_UPLOAD_SCOPE,
    message=MISSING_CLIENT_SECRETS_MESSAGE)

  storage = Storage("%s-oauth2.json" % sys.argv[0])
  credentials = storage.get()

  if credentials is None or credentials.invalid:
    # 手动构造flags对象，设置默认日志级别
    class Flags:
        logging_level = 'INFO'
    flags = Flags()
    credentials = run_flow(flow, storage, flags)

  return build(YOUTUBE_API_SERVICE_NAME, YOUTUBE_API_VERSION,
    http=credentials.authorize(httplib2.Http()))

修改后运行代码，会重新触发浏览器OAuth2登录流程，生成新的upload_youtube.py-oauth2.json缓存文件，之后即可正常上传视频。

内容的提问来源于stack exchange，提问作者ginjaemocoes