google-cloud-platform - 谷歌云平台: ImportError: No module named 'google.api.core' on deploy

Question

这是我尝试使用 gcloud app deploy 进行部署时收到的错误。我之前已经成功部署了相同的应用程序。我能够在本地计算机中运行该应用程序，但在部署时收到错误

回溯:

Updating service [default]...failed.                                           
ERROR: (gcloud.app.deploy) Error Response: [9] 
Application startup error:
[2017-08-25 10:50:23 +0000] [1] [INFO] Starting gunicorn 19.7.1
[2017-08-25 10:50:23 +0000] [1] [INFO] Listening at: http://0.0.0.0:8080 (1)
[2017-08-25 10:50:23 +0000] [1] [INFO] Using worker: sync
[2017-08-25 10:50:23 +0000] [7] [INFO] Booting worker with pid: 7
[2017-08-25 10:50:23 +0000] [7] [ERROR] Exception in worker process
Traceback (most recent call last):
  File "/env/lib/python3.5/site-packages/gunicorn/arbiter.py", line 578, in spawn_worker
    worker.init_process()
  File "/env/lib/python3.5/site-packages/gunicorn/workers/base.py", line 126, in init_process
    self.load_wsgi()
  File "/env/lib/python3.5/site-packages/gunicorn/workers/base.py", line 135, in load_wsgi
    self.wsgi = self.app.wsgi()
  File "/env/lib/python3.5/site-packages/gunicorn/app/base.py", line 67, in wsgi
    self.callable = self.load()
  File "/env/lib/python3.5/site-packages/gunicorn/app/wsgiapp.py", line 65, in load
    return self.load_wsgiapp()
  File "/env/lib/python3.5/site-packages/gunicorn/app/wsgiapp.py", line 52, in load_wsgiapp
    return util.import_app(self.app_uri)
  File "/env/lib/python3.5/site-packages/gunicorn/util.py", line 352, in import_app
    __import__(module)
  File "/home/vmagent/app/main.py", line 19, in <module>
    app = bookshelf.create_app(config)
  File "/home/vmagent/app/bookshelf/__init__.py", line 49, in create_app
    model = get_model()
  File "/home/vmagent/app/bookshelf/__init__.py", line 107, in get_model
    from . import model_datastore
  File "/home/vmagent/app/bookshelf/model_datastore.py", line 16, in <module>
    from google.cloud import datastore
  File "/env/lib/python3.5/site-packages/google/cloud/datastore/__init__.py", line 61, in <module>
    from google.cloud.datastore.client import Client
  File "/env/lib/python3.5/site-packages/google/cloud/datastore/client.py", line 33, in <module>
    from google.cloud.datastore.query import Query
  File "/env/lib/python3.5/site-packages/google/cloud/datastore/query.py", line 19, in <module>
    from google.api.core import page_iterator
ImportError: No module named 'google.api.core'
[2017-08-25 10:50:23 +0000] [7] [INFO] Worker exiting (pid: 7)
[2017-08-25 10:50:24 +0000] [1] [INFO] Shutting down: Master
[2017-08-25 10:50:24 +0000] [1] [INFO] Reason: Worker failed to boot.

Answer 1

tl;dr:将您的 google-cloud 升级到 0.27，它应该可以解决问题。

<小时/>

我认为这是新 google-cloud 依赖项的错误。就我而言，google-cloud==0.25 在其 setup.py 中引入这些依赖项:

 'google-cloud-core >= 0.24.0, < 0.25dev',
 'google-cloud-datastore >= 1.0.0, < 2.0dev',

就在最近的 8 月 24 日(提交此问题的前一天)，google-cloud-datastore 软件包已更新至 1.3.0。

遗憾的是，google-cloud-datastore 1.3.0 依赖于较新版本的 google-cloud-core:

 'google-cloud-core >= 0.27.0, < 0.28dev',

但是使用旧版本的 pip 似乎未解决/未警告此版本控制冲突。但是 google-cloud-datastore 想要 from google.api.core import page_iterator，尽管 google.api.core 并不是这样添加到0.27.0，然后一切都崩溃了。

我相信“bug”存在于 google-cloud===0.25(或者可能是您正在使用的任何版本)中的过载广泛依赖项中。

我相信我们的“修复”方法是升级到最新版本的 google-cloud=0.27。

虽然 google-cloud 的“正确修复”是为了改善其版本控制依赖性，但范围不那么广泛，否则可能会破坏与已发布模块的向后兼容性。