"ImportError: file_cache is unavailable" when using Python client for Google service account file_cache

"ImportError: file_cache is unavailable" when using Python client for Google service account file_cache

我使用的是 G Suite 服务帐户,具有完整的域授权。我有一个只读访问 Google 日历的脚本。该脚本工作正常,但在我 "build" 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 = "my_calendar_id@group.calendar.google.com"

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('me@mydomain.com')
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,我可以解决这个问题吗?我尝试重新安装 and/or 升级 google 包。

要为 Python 客户端使用 Google API,您需要先安装它,因为 Google API 没有内置在Python 个模块。该说明可在 Install the Library.

中找到

安装

您可以使用包管理器或手动下载并安装 Python 客户端库:

托管安装

使用 pip 或 setuptools 管理您的安装(您可能需要先 运行 sudo):

pip(首选):

$ pip install --upgrade google-api-python-client

Setuptools:使用 setuptools 包中包含的 easy_install 工具:

$ easy_install --upgrade google-api-python-client

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,没有警告消息。

我来这里有点晚了,但我今天遇到了类似的问题并找到了答案here

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

解决方案:

将您的 discovery.build() 更改为具有字段 cache_discovery=False

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

我不想降级我的 oauth2client。当您为 apiclient.discovery.build 设置 cache_discovery=False 时,您可以使用 oauth2client 4.1.2。这个简单的解决方案消除了错误:

service = discovery.build(api_name, 
                          api_version, 
                          credentials=credentials, 
                          cache_discovery=False)

Source

顺便说一句,这是我的回答的转贴 here

由于它们在技术上是警告(不是错误),如果您无法直接访问调用,则可以在实例化服务的任何地方执行此操作以抑制它们:

import logging logging.getLogger('googleapiclient.discovery_cache').setLevel(logging.ERROR)

感谢 theacodes who gave that answer here(但 'client' 中缺少 'n',这似乎导致那里有很多反对票)。

另见讨论 here

以下是我如何使用 google-api-python-client 在 Cloud Functions 上构建服务。

# for Cloud Functions use
def get_service():
    import googleapiclient.discovery
    return googleapiclient.discovery.build('compute', 'v1',  cache_discovery=False)

终于成功了。

尝试了列出的所有解决方案,但其中 none 有效。直到我尝试了@dtk 的(简单)建议,该建议列在评论的某处:

通过 运行 安装旧版本的 oauth2client:

pip install oauth2client==3.0.0

现在一切正常。谢谢@dtk!

添加到所选答案,如果 build 函数被依赖项调用,并且没有简单的方法来更新它的代码,则可以使用此代码强制 cache_discovery成为 False:

import googleapiclient.discovery

_build = googleapiclient.discovery.build


def no_cache_build(*args, **kw):
    kw["cache_discovery"] = False
    return _build(*args, **kw)


googleapiclient.discovery.build = no_cache_build