python - dev_appserver.py 启动失败

Question

当使用 dev_appserver.py 启动本地开发服务器时，出现以下错误。

$ dev_appserver.py app.yaml
INFO     2017-07-03 06:51:09,662 devappserver2.py:116] Skipping SDK update check.
Traceback (most recent call last):
  File "/home/daniel/google-cloud-sdk/platform/google_appengine/dev_appserver.py", line 103, in <module>
    _run_file(__file__, globals())
  File "/home/daniel/google-cloud-sdk/platform/google_appengine/dev_appserver.py", line 97, in _run_file
    execfile(_PATHS.script_file(script_name), globals_)
  File "/home/daniel/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/devappserver2.py", line 381, in <module>
    main()
  File "/home/daniel/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/devappserver2.py", line 369, in main
    dev_server.start(options)
  File "/home/daniel/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/devappserver2.py", line 176, in start
    configuration.modules[0].application_root, datastore_emulator_host)
  File "/home/daniel/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/api_server.py", line 524, in create_api_server
    appidentity_oauth_url=options.appidentity_oauth_url)
  File "/home/daniel/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/api_server.py", line 699, in setup_stubs
    oauth_url=appidentity_oauth_url)
  File "/home/daniel/google-cloud-sdk/platform/google_appengine/google/appengine/api/app_identity/app_identity_stub.py", line 198, in Create
    import six
  File "/home/daniel/google-cloud-sdk/platform/google_appengine/lib/six-1.9.0/six/__init__.py", line 825, in <module>
    from . import test_six
  File "/home/daniel/google-cloud-sdk/platform/google_appengine/lib/six-1.9.0/six/test_six.py", line 105, in <module>
    @py.test.mark.parametrize("item_name",
AttributeError: 'NoneType' object has no attribute 'parametrize'

版本:

$ gcloud --version
Google Cloud SDK 161.0.0
app-engine-python 1.9.55
beta 2017.03.24
bq 2.0.24
core 2017.06.26
gcloud 
gsutil 4.26

Answer 1

gcloud-sdk 组件 app-engine-python==1.9.55 销售的 six==1.9.0 库似乎是依赖于 pytest。

问题已通过安装 pytest

解决

$ pip install pytest

参见问题:https://issuetracker.google.com/issues/62980070