Question

请帮助！这是我使用App Engine的第一个项目。我已使用所需文件创建了该应用程序。但是，当我尝试在云sdk cmd（和其他cmd程序）中启动服务器时，它返回与方法解析顺序（MRO）有关的错误。

我尝试从包含gcloud skd的文件夹（同时提供应用程序提供程序）和应用程序文件夹（c：\ path-to-app> dev_appserver.py）运行dev_appserver.py。请查看以下错误：

D:\AMINU BISHIR\AMINU BISHIR\PROGRAMMING\Full Stack Web\Programs\my_app_engine>dev_appserver.py .
Traceback (most recent call last):
  File "C:\Users\Sadarwa\AppData\Local\Google\Cloud SDK\google-cloud-sdk\bin\dev_appserver.py", line 14, in <module>
    from bootstrapping import bootstrapping
  File "C:\Users\Sadarwa\AppData\Local\Google\Cloud SDK\google-cloud-sdk\bin\bootstrapping\bootstrapping.py", line 46, in <module>
    from googlecloudsdk.core.updater import update_manager
  File "C:\Users\Sadarwa\AppData\Local\Google\Cloud SDK\google-cloud-sdk\lib\googlecloudsdk\core\updater\update_manager.py", line 35, in <module>
    from googlecloudsdk.core import yaml
  File "C:\Users\Sadarwa\AppData\Local\Google\Cloud SDK\google-cloud-sdk\lib\googlecloudsdk\core\yaml.py", line 29, in <module>
    from googlecloudsdk.core import yaml_location_value
  File "C:\Users\Sadarwa\AppData\Local\Google\Cloud SDK\google-cloud-sdk\lib\googlecloudsdk\core\yaml_location_value.py", line 39, in <module>
    from ruamel import yaml
  File "C:\Users\Sadarwa\AppData\Local\Google\Cloud SDK\google-cloud-sdk\lib\third_party\ruamel\yaml\__init__.py", line 85, in <module>
    from ruamel.yaml.main import *  # NOQA
  File "C:\Users\Sadarwa\AppData\Local\Google\Cloud SDK\google-cloud-sdk\lib\third_party\ruamel\yaml\main.py", line 19, in <module>
    from ruamel.yaml.loader import BaseLoader, SafeLoader, Loader, RoundTripLoader  # NOQA
  File "C:\Users\Sadarwa\AppData\Local\Google\Cloud SDK\google-cloud-sdk\lib\third_party\ruamel\yaml\loader.py", line 10, in <module>
    from ruamel.yaml.constructor import (
  File "C:\Users\Sadarwa\AppData\Local\Google\Cloud SDK\google-cloud-sdk\lib\third_party\ruamel\yaml\constructor.py", line 21, in <module>
    from ruamel.yaml.comments import *                               # NOQA
  File "C:\Users\Sadarwa\AppData\Local\Google\Cloud SDK\google-cloud-sdk\lib\third_party\ruamel\yaml\comments.py", line 642, in <module>
    class CommentedMap(MutableMapping, ordereddict, CommentedBase):
  File "C:\Python27\lib\abc.py", line 86, in __new__
    cls = super(ABCMeta, mcls).__new__(mcls, name, bases, namespace)
TypeError: Error when calling the metaclass bases
    Cannot create a consistent method resolution
order (MRO) for bases ordereddict, MutableMapping, CommentedBase

Answer 1

已解决！

谢谢大家的回应！这对我有用：
1.仔细查看App Engine启动器的日志后，我发现该错误实际上来自python文件（该文件是python安装包的一部分）
2.我下载了最新版本的python 2（2.7.15）并安装了它 3.安装后，我就能解决问题了！
干杯，谢谢大家！

如何修复dev_appserver.py返回的错误

1 个答案: