google-app-engine - 谷歌云功能 - AttributeError : 'module' object has no attribute 'DEFAULT_MAX_REDIRECTS'

Question

我正在使用 Appengine cron 作业来安排云功能，当我部署并尝试运行作业时，出现以下错误。知道这里有什么问题吗？按照[此处][1]中的步骤

(/base/alloc/tmpfs/dynamic_runtimes/python27/a7637d5531ec9deb_unzipped/python27_lib/versions/1/google/appengine/runtime/wsgi.py:263)
Traceback (most recent call last):
  File "/base/alloc/tmpfs/dynamic_runtimes/python27/a7637d5531ec9deb_unzipped/python27_lib/versions/1/google/appengine/runtime/wsgi.py", line 240, in Handle
    handler = _config_handle.add_wsgi_middleware(self._LoadHandler())
  File "/base/alloc/tmpfs/dynamic_runtimes/python27/a7637d5531ec9deb_unzipped/python27_lib/versions/1/google/appengine/runtime/wsgi.py", line 299, in _LoadHandler
    handler, path, err = LoadObject(self._handler)
  File "/base/alloc/tmpfs/dynamic_runtimes/python27/a7637d5531ec9deb_unzipped/python27_lib/versions/1/google/appengine/runtime/wsgi.py", line 85, in LoadObject
    obj = __import__(path[0])
  File "/base/data/home/apps/s~zion-hymns/20180222t221057.407849847593018575/main.py", line 18, in <module>
    import pubsub_utils
  File "/base/data/home/apps/s~zion-hymns/20180222t221057.407849847593018575/pubsub_utils.py", line 24, in <module>
    import oauth2client.contrib.appengine as gae_oauth2client
  File "./lib/oauth2client/contrib/appengine.py", line 36, in <module>
    from oauth2client import client
  File "./lib/oauth2client/client.py", line 39, in <module>
    from oauth2client import transport
  File "./lib/oauth2client/transport.py", line 255, in <module>
    redirections=httplib2.DEFAULT_MAX_REDIRECTS,
AttributeError: 'module' object has no attribute 'DEFAULT_MAX_REDIRECTS'


  [1]: https://firebase.googleblog.com/2017/03/how-to-schedule-cron-jobs-with-cloud.html?utm_campaign=culture_education_functions_en_06-29-17&utm_source=Firebase&utm_medium=yt-desc

Answer 1

看来我发现了问题。您的 pip 使用的是哪个版本的 Python？在我的例子中它是 3.6 尽管 Python 本身是 2.7

所以问题是 pip 下载了 httplib2 的 Python 3.6 语法版本，它被上传到 Google App Engine，它使用 python 2.7。它试图加载模块并惨遭失败。

试试这个:

1. 检查你的 pip 版本:

pip -V

如果您从 /bla/bla/lib/python3.6/site-packages (python 3.6) 看到类似 pip 9.0.1 的内容，则继续

1. 安装python 2.7的pip(应该在python2.7安装包的bin文件夹下)

2. 删除项目中的旧 lib 文件夹

3. 运行 pip install -t lib -r requirements.txt(确保这个 pip 是正确的 2.7 版本)

4. 部署

通过这样做，您使用的是正确版本的库，它应该可以正常工作。

希望对您有所帮助。