将 Python 客户端用于 Google 服务帐户 file_cache 时出现“ImportError: file_cache 不可用”

Question

我正在使用具有完整域委派的 G Suite 服务帐户。我有一个只读访问谷歌日历的脚本。该脚本工作正常，但在我“构建”服务时抛出错误（在后台线程上？）。这是代码：

 from oauth2client.service_account import ServiceAccountCredentials
from httplib2 import Http
import urllib
import requests
from apiclient.discovery import build

cal_id = "[e-mail]"

scopes                = ['https://www.googleapis.com/auth/calendar.readonly']
credentials           = ServiceAccountCredentials.from_json_keyfile_name('my_cal_key.json', scopes=scopes)
delegated_credentials = credentials.create_delegated('[e-mail]')
http_auth             = delegated_credentials.authorize(Http())

# This is the line that throws the error
cal_service  = build('calendar','v3',http=http_auth)

#Then everything continues to work normally
request = cal_service.events().list(calendarId=cal_id)
response = request.execute()

# etc...

抛出的错误是：

 WARNING:googleapiclient.discovery_cache:file_cache is unavailable when using oauth2client >= 4.0.0
Traceback (most recent call last):
  File "/Users/myuseraccount/anaconda3/lib/python3.5/site-packages/googleapiclient/discovery_cache/__init__.py", line 36, in autodetect
    from google.appengine.api import memcache
ImportError: No module named 'google'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/myuseraccount/anaconda3/lib/python3.5/site-packages/googleapiclient/discovery_cache/file_cache.py", line 33, in <module>
    from oauth2client.contrib.locked_file import LockedFile
ImportError: No module named 'oauth2client.contrib.locked_file'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/myuseraccount/anaconda3/lib/python3.5/site-packages/googleapiclient/discovery_cache/file_cache.py", line 37, in <module>
    from oauth2client.locked_file import LockedFile
ImportError: No module named 'oauth2client.locked_file'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/myuseraccount/anaconda3/lib/python3.5/site-packages/googleapiclient/discovery_cache/__init__.py", line 41, in autodetect
    from . import file_cache
  File "/Users/myuseraccount/anaconda3/lib/python3.5/site-packages/googleapiclient/discovery_cache/file_cache.py", line 41, in <module>
    'file_cache is unavailable when using oauth2client >= 4.0.0')
ImportError: file_cache is unavailable when using oauth2client >= 4.0.0

这是怎么回事，这是我可以解决的问题吗？我试过重新安装和/或升级 google 包。

原文由 Clay 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

我在这里参加聚会有点晚了，但我今天遇到了类似的问题并在 这里 找到了答案

只有错误的解决方案： file_cache is unavailable when using oauth2client >= 4.0.0

解决方案：

更改您的 discovery.build() 以拥有该字段 cache_discovery=False 即

discovery.build(api, version, http=http, cache_discovery=False)

原文由 Tomos Williams 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 2

模块“google-api-python-client”的代码头说……

 install_requires = [
     'httplib2>=0.9.2,<1dev',
     'oauth2client>=1.5.0,<5.0.0dev',    <<=============
     'six>=1.6.1,<2dev',
     'uritemplate>=3.0.0,<4dev',
]

所以，我已经卸载了 oauth2client 版本 4.0.0

然后，我从官方 python 站点 https://pypi.python.org/pypi/oauth2client/1.5.2 下载了一个 tar.gz 文件中的 oauth2client 1.5.2

我已经安装了这个下载的文件，所以我有 1.5.2 版本的 oauth2client

 Package                  Version
------------------------ ---------
certifi                  2016.9.26
discovery                0.0.4
distribute               0.7.3
future                   0.16.0
google-api-python-client 1.5.5
httplib2                 0.9.2
oauth2client             1.5.2
pefile                   2016.3.28
pip                      9.0.1
pyasn1                   0.1.9
pyasn1-modules           0.0.8
PyInstaller              3.2
pypiwin32                219
requests                 2.11.1
rsa                      3.4.2
setuptools               28.8.0
six                      1.10.0
uritemplate              3.0.0

之后，ALL 再次正常工作并且没有警告消息。

原文由 Ángel 发布，翻译遵循 CC BY-SA 3.0 许可协议